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प्रश्न
Select the correct alternative.
A force does not change
पर्याय
mass
length
shape
state of motion.
उत्तर
mass
APPEARS IN
संबंधित प्रश्न
Fill in the blank.
Lubricants are used to ..................... friction.
Give one example of stops motion to indicate that the application of a force?
State the effect produced by a force in the following case:
The sling of a rubber catapult is stretched
Name the type of force which act in the following case:
A comb rubbed with silk attracts the bits of paper
In which case will there be more friction between the truck and the road: when the truck is empty or when it is loaded?
State if the following statement is true or false. Correct the statement if it is false.
Gravitational force is a contact force.
Answer the following in detail.
List all the forces acting on a boy sitting on a chair with the help of a suitable diagram.
Identify the agent exerting the force, the object on which the force is acting and the effect of the force in the following situation
A child jumping to a height.
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.
