English

Define force.

Advertisements
Advertisements

Question

Define force.  

Definition
Advertisements

Solution

Force is a physical cause that changes or may tend to change the state of rest or the state of motion of an object. 

shaalaa.com
  Is there an error in this question or solution?
Chapter 3: Force and Pressure - Short/Long Answer Questions [Page 56]

APPEARS IN

Selina Concise Physics [English] Class 8 ICSE
Chapter 3 Force and Pressure
Short/Long Answer Questions | Q 1. i. | Page 56
Samacheer Kalvi Science - Term 1 [English] Class 6 TN Board
Chapter 2 Force and Motion
Activity | Q IX. 1. | Page 32

RELATED QUESTIONS

An effort is applied on the bigger wheel of a gear having 32 teeth. It is used to turn a wheel of 8 teeth. Where it is used.


What is the SI unit of the moment of force?


A nut is opened by a wrench of length 20 cm. If the least force required is 2N, find the moment of force needed to loosen the nut.


A force always produces both the linear and turning motions.


To obtain a given moment of force for turning a body, the force needed can be decreased by


State two effects of a force when applied on a body.


State the effect of force F in of the following diagram.


State two factors on which affect moment of force.


A tall building has wide foundations.


A spanner of length 10 cm is used to open a nut by applying a minimum force of 5.0 N. Calculate the moment of force required.


State one way to obtain greater moment of a given force about a given axis of rotation.


Classify the following amongst contact and non-contact force.

force of tension in a string


A rocket is moving at a constant speed in space by burning its fuel and ejecting out the burnt gases through a nozzle. Answer the following

1) Is there any change in the momentum of the rocket? if yes, what causes the change in momentum?

2) Is there any force acting on the rocket? if yes, how much?


A spanner (or wrench) has a long handle. Why?


A, B and C are the three forces each of magnitude 4 N acting in the plane of the paper as shown in Figure. The point O lies in the same plane.

  1. Which force has the least moment about O? Give a reason.
  2. Which force has the greatest moment about O? Give a reason.
  3. Name the forces producing
    (a) Clockwise
    (b) anticlockwise moments.
  4. What is the resultant torque about the point O?

Classify the following amongst contact and non-contact forces.
gravitation force

 


Calculate the resultant moment of forces about O and state its direction in fig. 


In a beam balance when the beam is balanced in a horizontal position, it is in ________ equilibrium.


State one factor on which the magnitude of a non-contact force depends. How does the magnitude of a non-contact force change along with distance?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×