Question

A satellite travels around the Earth at constant speed in a uniform circular orbit that passes directly above Norman. At the moment the satellite is directly above Norman. What is the direction of the net force on the satellite ?

A Tangential to the orbit in the direction of motion.

B Tangential to the orbit opposite the direction of motion.

C Radially downward, towards Norman.

D Radially upward, away from Norman.

E Several of the above are possible.

Answer 1

As the satellite is travelling in a circular orbit with constant speed, the net force on the satellite will be the centripetal force which acts radially towards the centre of circlular path. Therefore, in this case, the direction of net force on the satellite will be radially downward, towards Norman. (Ans : C)