Question 5

Two satellites orbiting the Earth are situated on opposite sides of the Earth. Satellite A has a mass of 3 800 kg and Satellite B has a mass of 4 500 kg. Satellite A is at a height of 25 000 km above the surface of the Earth.

5.1 State Newton’s Universal Gravitational Law in words. (2)

5.2 Explain the term weightlessness. (2)

5.3 Calculate the force between the Earth and Satellite A. (4)

5.4 What distance above the surface of the Earth should Satellite B be to experience the same force towards the Earth as Satellite A?

Choose from: GREATER THAN, LESS THAN or EQUAL TO the distance above the Earth. Explain how you arrived at the answer. (4)


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