Question

4)

(a) Calculate the magnitude of the gravitational force exerted on a 675-kg satellite that is a distance of two earth radii from the center of the earth.
N

(b) What is the magnitude of the gravitational force exerted on the earth by the satellite?
N

(c) Determine the magnitude of the satellite's acceleration.
m/s²

(d) What is the magnitude of the earth's acceleration?
m/s²

5)

A Mercedes-Benz 300SL (m = 1900 kg) is parked on a road that rises 15

Answer 1

4)

Earth radius: R = 6371 km = 6.371 x 10^6 m
Earth mass: M = 5.97 x 10^24 kg

Satellite mass: m = 675 kg

So distance from satellite to centre of Earth is r = 2R = 1.27x10^7 m (to 3 sig figs)

(a) F = G m M /r