Satellite

Q.

In order to find the time, an astronaut orbiting in the earth satellite should use:

1. A pendulum clock
2. A watch having main spring to keep it going
3. Either a pendulum clock or a watch
4. Neither a pendulum clock nor a watch

Q.

In order to find time, the astronaut orbiting in an earth satellite should use

1. A pendulum clock
2. A watch having main spring to keep it going
3. Either a pendulum clock or a watch
4. Neither a pendulum clock nor a watch

Q. Periodic time (T) of a satellite revolving above Earth’s surface at a height equal to the radius of Earth (R), is
$g=9.8m/s^2$

1. $2\pi \sqrt{\frac{2R}{g}}$
2. $4\sqrt{2}\pi \sqrt{\frac{R}{g}}$
3. $2\pi \sqrt{\frac{R}{g}}$
4. $8\pi \sqrt{\frac{R}{g}}$

Q. The motion of moon around earth can be described as:

1. free fall under gravity
2. free fall without any gravitational force
3. linear motion
4. periodic motion