| 1. |
The ratio of the time periods for two satellites of equal mass in circular orbits of radii R and 16 R is |
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| 2. |
A satellite is moving around the Earth in a circular orbit with a velocity V. If the gravitational force of the Earth were to suddenly disappear, then the satellite would |
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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. |
Two planets of radii R1 and R2 have the same density. The ratio of their accelerations due to gravity at the surface is |
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| 5. |
A reference frame attached to the Earth |
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