Question

In 1994, the performer Rod Stewart drew over 3.0 million people to a concert in Rio de Janeiro, Brazil. The people in the group had an average mass of 80 kg.

1) What collective gravitational force would the group have on a 4.0-kg eagle soaring 210 m above the throng? If you treat the group as a point object, you will get an upper limit for the gravitational force. (Express your answer to two significant figures.)

2) What is the ratio of that force of attraction to the force between Earth and the eagle? (Express your answer to two significant figures.)

Answer 1