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प्रश्न
The work done by Sun on Earth at any finite interval of time is
विकल्प
positive, negative or zero
Strictly positive
Strictly negative
It is always zero
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उत्तर
It is always zero
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संबंधित प्रश्न
If the masses of the Earth and Sun suddenly double, the gravitational force between them will ___________.
The work done by the Sun’s gravitational force on the Earth is __________.
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The magnitude of the Sun’s gravitational field as experienced by Earth is
Define gravitational potential.
Derive the expression for gravitational potential energy.
If a comet suddenly hits the Moon and imparts energy which is more than the total energy of the Moon, what will happen?
If the Earth’s pull on the Moon suddenly disappears, what will happen to the Moon?
Calculate the gravitational field at point O due to three masses m1, m2 and m3 whose positions are given by the following figure. If the masses m1 and m2 are equal what is the change in a gravitational field at the point O?
Earth revolves around the Sun at 30 km s−1. Calculate the kinetic energy of the Earth. In the previous example, you calculated the potential energy of the Earth. What is the total energy of the Earth in that case? Is the total energy positive? Give reasons.
