A satellite close to the earth is in orbit above the equator with a period of rotation of 1.5 hours. If it is above a point P on the equator at some time, it will be above P again after time.
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A satellite close to the earth is in orbit above the equator with a period of rotation of 1.5 hours. If it is above a point P on the equator at some time, it will be above P again after time.

G1 Physics · Accepted Answer

Step 1: For a circular orbit, v = √(GM/r), L = m√(GMr), K = GMm/(2r), U = -GMm/r, E = -GMm/(2r), and T = 2π√(r³/GM). Step 2: Form the ratio or energy change using the given radii/masses. Step 3: Simplify to the requested value. Final: A: 1.6 h for west-to-east rotation; 24/17 h for east-to-west rotation.