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प्रश्न
Explain why:
A moon rocket needs to reach a certain velocity.
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उत्तर
A moon rocket needs to reach a certain velocity because during its motion earth attracts the rocket towards it by its gravitational force.
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संबंधित प्रश्न
In the Figure a block of weight 15 N is hanging from a rigid support by a string. What force is exerted by (a) a block on the string and (b) a string on the block? Name and show them in the diagram.

State two important characteristics of weight
State the unit of weight in CGS system.
Name the device used for measuring weight
Why is gold not weighed by a spring balance?
A man weigh 800 N at the equator. How does the weight of man change at the following place?
At poles
Can every force produced motion in every type of body?
Name the instrument used to measure the weight of a body.
In the below figure, a block of weight 20 N is hanging from a rigid support by a string. Find:
The force exerted by block on the string.
In the below figure, a block of weight 20 N is hanging from a rigid support by a string. Find:
The force exerted by string on the block.
