Author Question: Somewhere between the Earth and the Moon is a point where the gravitational attraction of the Earth ... (Read 141 times)

craiczarry · **on:** Jul 28, 2018

Somewhere between the Earth and the Moon is a point where the gravitational attraction of the Earth is canceled by the gravitational pull of the Moon. The mass of the Moon is 1/81 that of the Earth. How far from the center of the Earth is this point?
a. 8/9 the way to the Moon
c. 3/4 the way to the Moon
b. 9/10 the way to the Moon
d. 80/81 the way to the Moon

Question 2

An object when orbiting the Earth at a distance of three Earth radii from the center of the Earth has a weight of 2.0 N. What is the object's mass? (g at the surface of the Earth is 9.8 m/s2)
a. 0.10 kg
c. 0.92 kg
b. 1.8 kg
d. 1.0 kg