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# Selina solutions for Concise Physics Class 6 ICSE chapter 3 - Force [Latest edition]

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## Chapter 3: Force

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 3 Force Exercise Objective questions, objective questions

Objective questions | Q 1.1

Write true or false.

The frictional force acts in the direction of motion of body

• True

• False

Objective questions | Q 1.2

Write true or false.

The unit of weight is kilogram

• True

• False

Objective questions | Q 1.3

Write true or false.

A force can change the direction of motion of a moving body.

• True

• False

Objective questions | Q 1.4

Write true or false.

A force increases the mass of the body when applied on it.

• True

• False

Objective questions | Q 1.5

Write true or false.

The force of friction is always disadvantageous.

• True

• False

Objective questions | Q 1.6

Write true or false.

The sliding friction is more than the rolling friction.

• True

• False

Objective questions | Q 1.7

Write true or false.

Liquids offer more friction than the gases.

• True

• False

Objective questions | Q 1.8

Write true or false.

A wet oily road offers more friction than a dry rough road.

• True

• False

Objective questions | Q 2.1

Fill in the blank.

Force is applied as ........... or ..........

Objective questions | Q 2.2

Fill in the blank.

On squeezing a gum tube, its ............. changes.

Objective questions | Q 2.3

Fill in the blank.

On pulling a string, its .................. increases.

Objective questions | Q 2.4

Fill in the blank.

A moving football when kicked, its .................. changes.

Objective questions | Q 2.5

Fill in the blank.

On applying brakes on a moving car, its speed .........................

Objective questions | Q 2.6

Fill in the blank.

We use ball bearings to .................. the friction.

Objective questions | Q 2.7

Fill in the blank.

Friction ....................... the motion.

objective questions | Q 2.8

Fill in the blank.

Lubricants are used to ..................... friction.

Q 2.9

Fill in the blank.

................ causes wear and tear of moving parts of the machine.

Objective questions | Q 3

Match the following columns

 Column A Column B a) Non contact force 1) repel b) Like poles 2) kg c) Contact force 3) gravitational force d) Mass 4) wear and tear e) Weight 5) force of friction f) Friction 6) kgf
Objective questions | Q 4.1

Select the correct alternative.

A body falls downwards because of

• electrical force

• gravitational force

• mechanical force

• magnetic force

Objective questions | Q 4.2

Select the correct alternative.

A force does not change

• mass

• length

• shape

• state of motion.

Objective questions | Q 4.3

Select the correct alternative.

A force to be expressed correctly requires

• only the magnitude

• only the direction

• both the magnitude and direction

• none of the above.

Objective questions | Q 4.4

Select the correct alternative.

Friction

• promotes motion

• opposes motion

• acts in the direction of motion

• is always a nuisance

Objective questions | Q 4.5

Select the correct alternative.

Friction is reduced by

• making the surfaces wet

• making the surfaces dry

• making the surfaces rough

• sprinkling sand on the surface.

Objective questions | Q 4.6

Select the correct alternative.

Friction

• causes wear and tear

• produces heat

• stops a moving body

• has all the above disadvantages

Objective questions | Q 4.7

Select the correct alternative.

Friction is increased if

• an oil is sprayed

• the surfaces are made wet

• the surfaces are made dry

• the surfaces are polished

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 3 Force Exercise Short/Long answer questions

Short/Long answer questions | Q 1

Name the term used for the push or pull?

Short/Long answer questions | Q 2.1

Give one example of force as a push

Short/Long answer questions | Q 2.2

Give one example of force as a pull

Short/Long answer questions | Q 2.3

Give one example of force as a stretch

Short/Long answer questions | Q 2.4

Give one example of force as a squeeze

Short/Long answer questions | Q 3

Explain the meaning of the term force.

Short/Long answer questions | Q 4

What effect can a force have on a stationary body?

Short/Long answer questions | Q 5

What effects can a force have on a moving body?

Short/Long answer questions | Q 6

What effect can a force produce on a body which is not allowed to move?

Short/Long answer questions | Q 7.1

Give one example of produces motion to indicate that the application of a force?

Short/Long answer questions | Q 7.2

Give one example of stops motion to indicate that the application of a force?

Short/Long answer questions | Q 7.3

Give one example of slows down motion to indicate that the application of a force?

Short/Long answer questions | Q 7.4

Give one example of changes the direction of motion to indicate that the application of a force?

Short/Long answer questions | Q 7.5

Give one example of deforms a body to indicate that the application of a force?

Short/Long answer questions | Q 8.1

State the effect produced by a force in the following case:

The sling of a rubber catapult is stretched

Short/Long answer questions | Q 8.2

State the effect produced by a force in the following case:

A man pushes a heavy cart

Short/Long answer questions | Q 8.3

State the effect produced by a force in the following case:

A player uses his stick to deflect the ball.

Short/Long answer questions | Q 8.4

State the effect produced by a force in the following case:

A cyclist applies brakes

Short/Long answer questions | Q 8.5

State the effect produced by a force in the following case:

A spring is compressed.

Short/Long answer questions | Q 9

Name the two kinds of forces in nature.

Short/Long answer questions | Q 10.01

Name the type of force which act in the following case:

A coolie lifts a luggage

Short/Long answer questions | Q 10.02

Name the type of force which act in the following case:

A bicycle comes to rest slowly when the cyclist stops pedaling

Short/Long answer questions | Q 10.03

Name the type of force which act in the following case:

A stone falls from a roof

Short/Long answer questions | Q 10.04

Name the type of force which act in the following case:

A comb rubbed with silk attracts the bits of paper

Short/Long answer questions | Q 10.05

Name the type of force which act in the following case:

A string hangs with a load.

Short/Long answer questions | Q 10.06

Name the type of force which act in the following case:

A horse moves a cart

Short/Long answer questions | Q 10.07

Name the type of force which act in the following case:

A magnet attracts an iron pin

Short/Long answer questions | Q 10.08

Name the type of force which act in the following case:

A boy opens the door

Short/Long answer questions | Q 10.09

Name the type of force which act in the following case:

An apple falls from a tree

Short/Long answer questions | Q 10.1

Name the type of force which act in the following case:

A man rows a boat.

Short/Long answer questions | Q 11

What do you mean by the gravitational force? Give an example to illustrate it.

Short/Long answer questions | Q 12

Define the term “weight of a body”

Short/Long answer questions | Q 13

What do you understand by the term friction?

Short/Long answer questions | Q 14

Give an example to illustrate the existence of the force of friction.

Short/Long answer questions | Q 15

What is the cause of friction?

Short/Long answer questions | Q 16

State two factors which directly affect the force of friction.

Short/Long answer questions | Q 17

In which case will there be more friction between the truck and the road: when the truck is empty or when it is loaded?

Short/Long answer questions | Q 18

Which offers more friction on a body: a glass surface or a wooden surface?

Short/Long answer questions | Q 19

Name the three kinds of friction.

Short/Long answer questions | Q 20

Short/Long answer questions | Q 21

When you apply brakes, the bicycle stops and the rim of the wheel becomes hot? Explain the reason.

Short/Long answer questions | Q 22

The eraser gets smaller and smaller as you use it more and more. Explain the reason.

Short/Long answer questions | Q 23

List three ways of reducing friction.

Short/Long answer questions | Q 24

It is difficult to open an inkpot with greasy or oily hands. Explain.

Short/Long answer questions | Q 25

It is difficult to walk on a wet road. Explain.

Short/Long answer questions | Q 26

Give three examples to illustrate that friction is a necessary evil.

Short/Long answer questions | Q 27.1

Define static friction

Short/Long answer questions | Q 27.2

Define sliding friction

Short/Long answer questions | Q 27.3

Define rolling friction

Short/Long answer questions | Q 28

Arrange the following in descending order:

1. static friction
2. sliding friction and
3. rolling friction?
Short/Long answer questions | Q 29

A body needs a force F1 just to start moving on a surface, a force F2 to continue its motion and a force F3 to roll on the surface. What is

1. the static friction
2. sliding friction and
3. rolling friction? State whether F2 is equal, less than or greater than (1) F1 and (2) F3.

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 3 Force Exercise Additional questions

What do you understand by a force?

Define weight.

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 3 Force Exercise Exercises

Exercises | Q 1

Which of the following is not an effect of force?

• Change in the direction of an object

• Change in the shape and size of an object

• Change in the mass of an object

• Change in the position of a stationary object.

Exercises | Q 2

Which of the following is a contact force?

• Gravitational force

• Frictional force

• Electrostatic force

• Magnetic force

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 3 Force Exercise Exercises

Exercises | Q 1

Fill in the blank.

.................... is the SI unit of force.

Exercises | Q 2

Fill in the blank.

Magnetic force is a ................ force.

Exercises | Q 3

Fill in the blank.

The force acting on a mango falling from a tree is an example of .....................

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 3 Force Exercise Exercises

Exercises | Q 1

Match the following.

 Column A Column B 1. Non-contact forces a. perpendicular to surface 2. Catapult b. an act of push or pull 3. Force c. unit of force 4. Normal force d. action-at-a-distance forces 5. Newton e. contact force

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 3 Force Exercise Exercises

Exercises | Q 1

State if the following statement is true or false. Correct the statement if it is false.

If two forces acting in opposite directions on a body arc of equal magnitude, then the body will not move.

• True

• False

Exercises | Q 2

State if the following statement is true or false. Correct the statement if it is false.

Gravitational force is a contact force.

• True

• False

Exercises | Q 3

State if the following statement is true or false. Correct the statement if it is false.

Like charges always attract each other.

• True

• False

Exercises | Q 4

State if the following statement is true or false. Correct the statement if it is false.

It is possible that a force applied to an object may not bring any change in it.

• True

• False

Exercises | Q 5

State if the following statement is true or false. Correct the statement if it is false.

Two equal and opposite forces acting on an object balance out each other.

• True

• False

Exercises | Q 6

State if the following statement is true or false. Correct the statement if it is false.

Force applied on an object can increase its mass.

• True

• False

Exercises | Q 7

State if the following statement is true or false. Correct the statement if it is false.

Friction always acts in the direction of motion of an object.

• True

• False

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 3 Force Exercise Exercises

Exercises | Q 1

Answer the following in a word or two or in a sentence.

Give an example in which a force can change the direction of an object.

Exercises | Q 2

Answer the following in a word or two or in a sentence.

Which force is responsible for supporting the weight of a book placed on a table?

Exercises | Q 3

Answer the following in a word or two or in a sentence.

Which type of force acts on a string pulled from both ends?

Exercises | Q 4

Answer the following in a word or two or in a sentence.

Name the force that is responsible for the falling of a stone from a height to the ground.

Exercises | Q 5

Answer the following in a word or two or in a sentence.

What do you understand by magnetic force?

Exercises | Q 6

Answer the following in a word or two or in a sentence.

Why does a rolling ball stop after moving some distance?

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 3 Force Exercise Exercises

Exercises | Q 1

Define force. Write its SI unit.

Exercises | Q 2

What will happen to an object if two equal forces act on it in opposite directions?

Exercises | Q 3

What do you understand by normal force?

Exercises | Q 4

Why does a charged balloon stick to a wall?

Exercises | Q 5

Why is magnetic force considered as an action-at-a-distance force?

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 3 Force Exercise Exercises

Exercises | Q 1

What are the various effects of force? State one example of each.

Exercises | Q 2

Differentiate between contract and non-contract force. Support your answer with suitable examples.

Exercises | Q 3

List all the forces acting on a boy sitting on a chair with the help of a suitable diagram.

Exercises | Q 4

Why do all objects have a tendency to fall towards the centre of the earth?

Exercises | Q 5

Differentiate between mass and weight of an object.

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 3 Force Exercise Exercises

Exercises | Q 1

Identify the agent exerting the force, the object on which the force is acting and the effect of the force in the following situation

Squeezing out the juice from an orange.

Exercises | Q 2

Identify the agent exerting the force, the object on which the force is acting and the effect of the force in the following situation

Taking out ointment from a medicinal tube.

Exercises | Q 3

Identify the agent exerting the force, the object on which the force is acting and the effect of the force in the following situation

A child jumping to a height.

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 3 Force Exercise Exercises

Exercises | Q 1

Solve the following numerical problem.

Two horses pull a cart in the same direction with a force of 500 N each. Find the resultant force acting on the cart.

Exercises | Q 2

Solve the following numerical problem.

Two force of 12 N and 25 N act on a body to the left-hand side, while another force of 35 N acts on it to the right-hand side. Find the resultant of the forces.

Exercises | Q 3

Solve the following numerical problem.

Two persons are pushing a car with a force of 30 N and 70 N in opposite directions. Calculate the resultant force and its direction.

Exercises | Q 4

Solve the following numerical problem.

The forces acting on a wooden block are shown in the figure given alongside. Find the resultant of the forces and the direction of the resultant force.

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 3 Force Exercise check your progress, Check your progress

check your progress | Q 1

Fill in the blank.

More the roughness of a surface, greater is the ........................

Check your progress | Q 2

Fill in the blank.

Rolling friction offers ............. resistance than sliding friction.

Check your progress | Q 3

Fill in the blank.

The force of friction acting between two bodies in contact while at rest is known as ................ friction.

Check your progress | Q 4

Fill in the blank.

Weight remaining the same, friction is independent of ............. of surface in contact.

Check your progress | Q 5

Fill in the blank.

Sliding friction and rolling friction are types of .................. friction.

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 3 Force Exercise Exercises

Exercises | Q 1

Force of friction comes into play when a/an

• object attempts motion

• moving object tries to stop

• object is at rest

• all of the these

Exercises | Q 2

Friction always

• supports motion

• starts motion

• encourages motion

• opposes motion

Exercises | Q 3

Friction is offered by

• solids

• liquids

• gases

• all of these

Exercises | Q 4

A car skids on a wet or muddy road due to

• increased friction between the road and the tires.

• lubrication of brakes on a wet road.

• reduced friction between the road and the tires.

• streamlined shape of the car

Exercises | Q 5

Friction for an object can be reduced by

• providing wheels

• lubricating

• streamlining

• all of these

Exercises | Q 6

Friction produces

• heat

• change of state

• electricity

• pressure

Exercises | Q 7

If you pour some oil onto a floor, the friction would

• increase

• decrease

• remain the same

• none of these

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 3 Force Exercise Exercises

Exercises | Q 1

Fill in the blank.

Rolling friction is ........... than sliding friction.

Exercises | Q 2

Fill in the blank.

Smoother the surface, ................. is the frictional force offered by it.

Exercises | Q 3

Fill in the blank.

Friction depends upon the ............... of an object.

Exercises | Q 4

Fill in the blank.

Friction is a type of .................

Exercises | Q 5

Fill in the blank.

Bicycles use ...................... to reduce friction between the pedals and the crank

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 3 Force Exercise Exercises

Exercises | Q 1

State if the following statement is true or false. Correct the statement if it is false.

Friction wears down the parts of machi

• True

• False

Exercises | Q 2

State if the following statement is true or false. Correct the statement if it is false.

Friction has no relation with our walking or running.

• True

• False

Exercises | Q 3

State if the following statement is true or false. Correct the statement if it is false.

Friction helps us to grip the objects in our hand.

• True

• False

Exercises | Q 4

State if the following statement is true or false. Correct the statement if it is false.

Tires of vehicles are provided with grooved designs to decrease friction.

• True

• False

Exercises | Q 5

State if the following statement is true or false. Correct the statement if it is false.

Friction is offered by all the three states of matter.

• True

• False

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 3 Force Exercise Exercises

Exercises | Q 1

Match the following.

 Column A Column B 1. Rolling friction a. making grooved designs 2. Static friction b. regular oiling 3. Reducing friction c. a book placed on a tabletop 4. Increasing Friction d. wheels of a car

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 3 Force Exercise Exercises

Exercises | Q 1

Answer the following in a word or two or in a sentence.

A child tries to slide a wooden block on the top of a table, but she is unable to get a smooth movement. What material do you suggest she should use in between the block and the table to get a smooth movement?

Exercises | Q 2

Answer the following in a word or two or in a sentence.

Why is difficult for a pen to leave a mark on a highly smooth plastic sheet?

Exercises | Q 3

Answer the following in a word or two or in a sentence.

Name the force responsible for opposing the motion between two bodies in contact.

Exercises | Q 4

Answer the following in a word or two or in a sentence.

Name a method used to reduce friction.

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 3 Force Exercise Exercises

Exercises | Q 1

When you push something heavy, the resistance you feel decreases as soon as the object starts moving. Explain the reason.

Exercises | Q 2

Define rolling friction and give an example where rolling. friction comes into play.

Exercises | Q 3

How can sliding friction be changed into rolling friction easily?

Exercises | Q 4

Why do wrestlers rub powder on their hands before getting into the ring?

Exercises | Q 5

List the various states of matter that offer frictional force?

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 3 Force Exercise Exercises

Exercises | Q 1

Define friction and explain how it is useful to us.

Exercises | Q 2

Write the characteristics of the force of friction?

Exercises | Q 3

How is friction harmful to us? Write some ways by which one can reduce friction.

Exercises | Q 4

Describe three different ways by which friction can be increased to help us in various situations?

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 3 Force Exercise Exercises

Exercises | Q 1

Give a reason for the following.

Vehicles skid on muddy and wet roads. Suggest what type of tires can prevent skidding of vehicles?

Exercises | Q 2

Give a reason for the following.

Boats and ships have streamlined shapes?

Exercises | Q 3

Give a reason for the following.

Brake handles of motorcycles are generally covered with a toweled cloth?

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 3 Force Exercise Exercises

Exercises | Q 1

Solve the crossword puzzle.

Across
1. Type of force which depends upon the roughness of a surface
2. An effect of friction
3. The force of friction caused due to fluids
4. Type of friction acting between two bodies at rest
5. Type of friction which occurs when applied force overcomes static friction
6. A special body design to enable minimum drage Down

## Selina solutions for Concise Physics Class 6 ICSE chapter 3 - Force

Selina solutions for Concise Physics Class 6 ICSE chapter 3 (Force) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Concise Physics Class 6 ICSE solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. Selina textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Concise Physics Class 6 ICSE chapter 3 Force are Concept of Force - Push Or Pull., Effects of Force on Mass (No Effect), Effects of Force on Speed, Effects of Force on Direction (Rest and Motion), Effects of Force on Change in Shape and Size, Effects of Force on Using Real-world Examples, Concept for Force of Friction, Force of Friction - Advantages and Disadvantages..

Using Selina Class 6 solutions Force exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Selina Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 6 prefer Selina Textbook Solutions to score more in exam.

Get the free view of chapter 3 Force Class 6 extra questions for Concise Physics Class 6 ICSE and can use Shaalaa.com to keep it handy for your exam preparation

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