Universal Gravitation

Answer the following questions. Mark on the screen. You may change
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#1 What is the magnitude of the gravitational force between the moon (mmoon = 7.36 x 1022 kg) and the Earth (mEarth = 5.98 x 1024 kg)? The average Earth-moon distance is 3.84 x 108 m.

#2 Suppose you are an astronaut exploring one of Saturnās moons. The radius of the moon has been determined to be about 3.0 x 106 m. While on the planet, you notice that things take about twice as long to fall a given distance as they take to fall the same distance on Earth. What is the best estimate of the moonās mass?

#3A satellite of mass 1500 kg orbits around the Earth (mEarth = 5.98 x 1024 kg) in a circular orbit at an altitude of 6.0 x 105 m. What is the orbital speed of the satellite?