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प्रश्न
Name the force which stops you falling through the floor.
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उत्तर
Reaction force
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संबंधित प्रश्न
Fill in the following blank with suitable word :
The acceleration due to gravity on the moon is about ………………of that on the earth.
Give reason for the following :
The force of gravitation between two cricket balls is extremely small but that between a cricket ball and the earth is extremely large.
A stone is thrown vertically upwards with initial velocity u reaches a height ‘h’ before coming down. Show that the time taken to go up is the same as the time taken to come down.
What will be the weight of a person on earth, who weighs 9N on the moon?
How is the acccelaration due to gravity on the surface of the earth realted to its mass and radius ?
A body falls freely under gravity from rest and reaches the ground in time t. Write the expression for the height fallen by the body.
A body is projected vertically upward with an initial velocity u . If acceleartion due to gravity is g , the time for which it remains in air , is :
The value of gravitational acceleration (g) is ________.
Write scientific reason.
When we drop a feather and a stone at the same time from a height the stone reach the earth faster than a feather.
Distinguish between:
Universal gravitational constant - Gravitational acceleration of earth.
