Q33 of 100 Page 209

What is meant by saying that force is due to an interaction'? Give an example to illustrate your answer.

It means for force to come into play, atleast two object must interact with each other. For example: If the man pushes the car with his hands due to which the car starts moving, there is an interaction between man and a car. During this interaction force arises which Acts on the car and makes it move in the direction of applied force.


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Define 'state of motion' of an object. Name the 'agent' which can change the state of motion of an object.

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Give two examples of situations where you push or pullto change the state of motion of objects.

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In a tug of war; when the two teams are pulling the rope, a stage comes when the ropedoesnot move to either side at all. What can you say about the magnitudes and directions of the forces being applied to the rope by the two teams at this stage?

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What is force? State the various effects of force.