A man weight on the surface of earth is 75 kg how much would be weight in rocket at a distance of 30000km from the earth?
Answers
If the rocket was accelerating probably by firing it's rocket engine , the men would feel weight . But since we don't know how fast the rocket is accelerating, we have no way to know the men's weight would be.
The rocket is 30000 km from the center of earth . At the earth surface the acceleration due to gravity is 9.8 m/s ^2 . If the man standing on the surface of the earth , his weight would be 75kg x 9.8m/s ^s or about 735 Newtons
30000 km is 5 times far as the surface is center from the earth . As we double the gravitational acceleration drop by a factor of 4 . The no. You give is not so easy to work
Let's say the that instead of five times the earths radius , the rocket is only 4 times the earth radius away .
This means the acceleration due to gravity should be 1/6 th of that on the surface of earth or about 0.6 m/s^2 . But the men would feel no weigh if the rocket was not holding him up against the pull of gravity .
If the rocket accelerating away from the earth with an accelerationof say 0.6m/s ^2 , it would cancel out the acceleration due to gravity and the man would have no weight of 75kg x 0.6m/s^2. And the rocket would over the earth.