The time period of an earth satellite in circular orbit is independent of:
1. | the mass of the satellite |
2. | radius of the orbit |
3. | none of them |
4. | both of them |
A person sitting in a chair in a satellite feels weightless because:
1. | the earth does not attract the objects in a satellite. |
2. | the normal force by the chair on the person balances the earth's attraction. |
3. | the normal force is zero. |
4. | the person in the satellite is not accelerated. |
A body is suspended from a spring balance kept in a satellite. The reading of the balance is W1 when the satellite goes in an orbit of radius R and is W2 when it goes in an orbit of radius 2R.
1. W1 = W2
2. W1 < W2
3. W1 > W2
4. W1 ≠ W2
Two satellites A and B move around the earth in the same orbit. The mass of B is twice the mass of A. Then:
1. | speeds of A and B are equal. |
2. | the potential energy of earth \(+\) A is same as that of earth \(+\) B. |
3. | the kinetic energy of A and B are equal. |
4. | the total energy of earth \(+\) A is same as that of earth \(+\) B. |