# Balbharati solutions for General Science 8th Standard Maharashtra State Board chapter 3 - Force and Pressure [Latest edition]

## Chapter 3: Force and Pressure

Exercise
Exercise [Page 22]

### Balbharati solutions for General Science 8th Standard Maharashtra State Board Chapter 3 Force and Pressure Exercise [Page 22]

Exercise | Q 1.1 | Page 22

The SI unit of force is_________.

• Dyne

• Newton

• Joule

Exercise | Q 1.2 | Page 22

The air pressure on our body is equal to __________ pressure.

• Atmospheric

• sea bottom

• space

Exercise | Q 1.3 | Page 22

For a given object, the buoyant force in liquids of different ________ is__________.  (the same, density, different, area)

Exercise | Q 1.4 | Page 22

The SI unit of pressure is_______.

• N/m

• N/m2

• kg/m2

• pa/m2

Exercise | Q 2 | Page 22

Make a match

 A group B group 1. Fluid a. Higher pressure 2. Blunt knife b. Atmospheric pressure 3. sharp needle c. Specific gravity 4. Relative density d. Lower pressure 5. Hecto pascal e. Same pressure in all directions
Exercise | Q 3.1 | Page 22

A plastic cube is released in water. Will it sink of come to the surface of the water?

Exercise | Q 3.2 | Page 22

Why do the load-carrying heavy vehicles have a large number of wheels?

Exercise | Q 3.3 | Page 22

How much pressure do we carry on our heads? why don't we feel it?

Exercise | Q 4.1 | Page 22

Why does it happen?

A ship dips to a larger depth in fresh water as compared to marine water.

Exercise | Q 4.2 | Page 22

Why does it happen?

Fruits can easily be cut with a sharp knife.

Exercise | Q 4.3 | Page 22

Why does it happen?

The wall of a dam is broad at its base.

Exercise | Q 4.4 | Page 22

Why does it happen?

If a stationary bus suddenly speeds up, passengers are thrown in the backward direction.

Exercise | Q 5 | Page 22

Complete the following tables.

 Mass(Kg) Volume (m3) Density(kg/m3) 350 175 - - 190 4

 Density of Metal (kg/m3) Density of water (kg/m3) Relative Density 103 5 8.5 × 103 103 -

 weight(N) Area (m2) Pressure(Nm−2) - 0.04 20,000 1500 500 -
Exercise | Q 6 | Page 22

The density of metal is 10.8 × 103 kg/m3. Find the relative density of the metal.

Exercise | Q 7 | Page 22

Volume of an object is 20 cm3 and the mass in 50 g. Density of water is 1 g cm-3 . Will the object float on water or sink in Water?

Exercise | Q 8 | Page 22

The volume of a plastic covered sealed box is 350 cm3 and the box has a mass 500 g. Will the box float on water or sink in water? what will be the mass of water displaced by the box?

Exercise

## Balbharati solutions for General Science 8th Standard Maharashtra State Board chapter 3 - Force and Pressure

Balbharati solutions for General Science 8th Standard Maharashtra State Board chapter 3 (Force and Pressure) 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 Maharashtra State Board General Science 8th Standard Maharashtra State Board solutions in a manner that help students grasp basic concepts better and faster.

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Concepts covered in General Science 8th Standard Maharashtra State Board chapter 3 Force and Pressure are Balanced and Unbalanced Forces, Pressure on Solids, Liquid Pressure, Buoyancy Force (Upthrust Force), Types of Force: Non-Contact Force, Force, Types of Force: Contact Force, Inertia and Mass, Types of Inertia, Thrust and Pressure, Density of the Fluid, Gas Pressure, Atmospheric Pressure, Archemedes Principle, Relative Density and Its Unit.

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