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प्रश्न
Answer the following in detail.
What are the various effects of force? State one example of each.
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उत्तर
Various effects of force :
- A force can move a stationary object.
Example: Pulling a suitcase on its wheels. - A force can stop a moving object.
Example: A ball rolling on the rough surface comes to rest after some time due to the force of friction. - A force can change the speed of a moving object.
Example: We can increase the speed of a moving swing, we apply a force (push) in the direction of motion to increase its speed. - A force can change the direction of a moving object.
Example: A moving bicycle changes its direction when a force is applied to steer its handle. - A force can change the shape and size of an object.
Example: When we make a chapatti, a small ball of dough is changed to a flat, circular shape of a much bigger size by applying a force with the help of a rolling pin.
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संबंधित प्रश्न
List three ways of reducing friction.
Define static friction
Define sliding friction
Define rolling friction
Fill in the blank.
Weight remaining the same, friction is independent of ............. of surface in contact.
Fill in the blank.
Sliding friction and rolling friction are types of .................. friction.
Tick the most appropriate answer.
Force of friction comes into play when a/an
Fill in the blank
Rolling friction is ............. than sliding friction.
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.
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.
