Question

If suddenly the gravitational force of attraction between Earth and a satellite revolving around it becomes zero, then the satellite will
(a) continue to move in its orbit with same velocity
(b) move tangentially to the original orbit in the same velocity
(c) become stationary in its orbit
(d) move towards the earth.

Answer 1

(b) : The centripetal and centrifugal forces disappear, the satellite has the tangential velocity and it will move in a straight line Compare Lorentzian force on charges in the cyclotron.