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What is frictional force? Explain with an example.

Important Questions on Force, Work and Energy

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Environmental Studies>Exploring the World>Force, Work and Energy>Force
Force can change the shape of objects.
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Environmental Studies>Exploring the World>Force, Work and Energy>Force
What is the force of friction?
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Environmental Studies>Exploring the World>Force, Work and Energy>Force
If the force applied on the object is in the direction of its motion?
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Environmental Studies>Exploring the World>Force, Work and Energy>Force

What is friction? How is it a beneficial force?

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Environmental Studies>Exploring the World>Force, Work and Energy>Force

Do you apply force to change the shape of an object?

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Environmental Studies>Exploring the World>Force, Work and Energy>Force
When we pull a rubber band, it gets stretched. Why?
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Environmental Studies>Exploring the World>Force, Work and Energy>Force

In the following situation identify the agent exerting the force and the object on which it acts. State the effect of the force in the case. 

An athlete making a high jump to clear the bar at a certain height.

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Environmental Studies>Exploring the World>Force, Work and Energy>Force

State the effect of force F in of the following diagram.
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Environmental Studies>Exploring the World>Force, Work and Energy>Force
Why is friction essential for us?
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Environmental Studies>Exploring the World>Force, Work and Energy>Force
Which of these statements is wrong about the force?
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Environmental Studies>Exploring the World>Force, Work and Energy>Force

Pooja is playing carom with her friend. What brings the striker to stop? 

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Environmental Studies>Exploring the World>Force, Work and Energy>Force
Give reasons why a rolling ball stops by itself after covering a short distance?
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Environmental Studies>Exploring the World>Force, Work and Energy>Force

Fill in the blank with an appropriate word:

A _____ [light/force/sound] can change the shape of a ball.

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Environmental Studies>Exploring the World>Force, Work and Energy>Force
To stop a moving object, we need to apply _____.
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Environmental Studies>Exploring the World>Force, Work and Energy>Force
Chinmaya was playing with a toy car. He could easily push it on the tiled floor but as he reached the carpet, he had to apply more force to push; explain why?
 
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Environmental Studies>Exploring the World>Force, Work and Energy>Force
Explain the way force can change the shape of an object.
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Environmental Studies>Exploring the World>Force, Work and Energy>Force
Cotyledons are also called-
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Environmental Studies>Exploring the World>Force, Work and Energy>Force

In which of the following pictures is the person doing more work?

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Environmental Studies>Exploring the World>Force, Work and Energy>Force
A force applied on an object may change its ________.
EASY
Environmental Studies>Exploring the World>Force, Work and Energy>Force

Force can change the shape of an object.