satellite is in a circular orbit above Earth's surface. Why is the work done by the gravitational force zero? ?
- billrussell42Lv 71 decade agoFavorite Answer
because the force is at right angles to the motion.
- 1 decade ago
Because work done is F*d. Here, the force is always perpendicular to the rotation. This means that the distance never changes. The satellite always remains the same distance from the center of the earth -- which is where the gravitational force radiates from. The work done is zero.
- Anonymous1 decade ago
The two cancel each other and then the satellite escapes.