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प्रश्न
What is a force?
उत्तर
Force is that external agency which tends to change the state of rest or the state of motion of a body.
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संबंधित प्रश्न
Classify the following amongst contact and non - contact forces:
Frictional force
Normal reaction force
Force of tension in a string
Gravitational force
Electrostatic force
Magnetic force
Give one example in each case where :
The force is of contact, and
Force is at a distance
A spring is compressed against a rigid wall. Draw a neat and labeled diagram showing the forces acting on the spring.
Give one example in each of the following cases where a force:
(i) Stops a moving body.
(ii) Moves a stationary body.
(iii) Changes the size of a body.
(iv) Changes the shape of a body.
Name the S.I. unit of force and define it .
State four effects which a force can bring about. Give two examples in each case.
Multiple Choice Question. Select the correct option.
Action-reaction forces
Gravitational force is a ______ force.
Complete the analogy.
Kicking a ball: Contact force:: Falling of leaf: ______?
While sieving grains, small pieces fall down. Which force pulls them down?
