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प्रश्न
Explain the following:
People often shake the branches of a tree for getting down its fruits.
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उत्तर
When the branches of the tree are shaken, they come in motion, while the fruits due to inertia remain in a state of rest. Thus, the larger and weakly attached fruits get detached from the branches and fall down due to the pull of gravity.
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संबंधित प्रश्न
Consider a planet moving in an elliptical orbit round the sun. The work done on the planet by the gravitational force of the sun
(a) is zero in any small part of the orbit
(b) is zero in some parts of the orbit
(c) is zero in one complete revolution
(d) is zero in no part of the motion.
Multiple Choice Question. Select the correct option.
The mass of earth is 6 × 1024 kg and radius of earth is 6.4 × 106 m. The magnitude of force between the mass of 1 kg and the earth is:
Distinguish between gravity and gravitation
Why don't you feel the force of attraction between your friend sitting close to you and yourself?
A force can produce ________, In an object at rest. It can __________ an object and change its __________ of motion.
Gravity is another kind of ________. It exerts all through the ________. The Sun's gravity keeps the ___________ in their orbits. Gravity can only be felt with very large ________.
Explain why:
The atmosphere does not escape.
An apple falls towards the earth due to its gravitational force. The apple also attracts the earth with the same force. Why do we not see the earth rising towards the apple? Explain.
What do you mean by a gravitational constant?
If the distance between two objects is doubled, the gravitational force becomes ______.
