Which of the following systems is in translational equilibrium?
PHYSICS · Single correct · AP · Physics 1: Algebra-based · Force and Translational Dynamics · Force and Translational Dynamics
Problem
Which of the following systems is in translational equilibrium?
(a) A communication satellite moving at constant speed in a circular orbit around Earth
(b) A pendulum bob at the highest point of its swing, momentarily at rest
(c) A space probe far from all stars and planets, drifting at constant velocity with its engines off
(d) A spacecraft drifting with its engines off while still within Earth’s gravitational field, moving in a straight line away from Earth