Question

Taking radius of the Earth as 6400 km and g at the Earth’s surface as 9.8 m/s², calculate the speed of revolution of a satellite orbiting close to the Earth’s surface.

Answer 1

Given: R = 6400 km = 6.4 × 10⁶ m, g = 9.8 m/s²

To find: Critical velocity (v_c)

Formula: v_c = \(\sqrt{gR}\)

Calculation: From formula,

The speed of revolution of the satellite orbiting close to the Earth’s surface is 7.92 × 10³ m/s.