| 1. |
If a simple pendulum with a time period of 5 seconds is made to oscillate at a height R equal to the Earth's radius, then its time period at this height will be |
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| 2. |
The ratio of the time periods for two satellites of equal mass in circular orbits of radii R and 4 R is |
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| 3. |
If the value of gravitational acceleration at a height h above the Earth's surface is the same as that at a depth d below the Earth's surface (with both h and d small compared to the Earth's radius R), then |
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| 4. |
A planet is moving around the Sun in a circular orbit of circumference C. The work done on the planet by the gravitational force F of the Sun is |
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| 5. |
If the distance between two masses is increased by a factor of 4, the gravitational force of attraction between them will |
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