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प्रश्न
Fill in the blank.
On squeezing a gum tube, its ............. changes.
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उत्तर
On squeezing a gum tube, its shape changes.
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संबंधित प्रश्न
Select the correct alternative.
Friction
Name the type of force which act in the following case:
A boy opens the door
Name the type of force which act in the following case:
A man rows a boat.
State if the following statement is true or false. Correct the statement if it is false.
Friction always acts in the direction of motion of an object.
Answer the following in a word or two or in a sentence.
Name the force that is responsible for the falling of a stone from a height to the ground.
Answer the following in a word or two or in a sentence.
What do you understand by magnetic force?
Give a reason for the following.
Boats and ships have streamlined shapes?
Two balls of the same size but of different materials, rubber and iron are kept on the smooth floor of a moving train. The brakes are applied suddenly to stop the train. Will the balls start rolling? If so, in which direction? Will they move at the same speed? Give reasons for your answer.
What is momentum? Write its SI unit. Interpret force in terms of momentum. Represent the following graphically
(a) momentum versus velocity when mass is fixed.
(b) momentum versus mass when velocity is constant.
Mention the factors on that the effect of a force depends.
