A satellite of mass 3400 kg is in a circular orbit around Earth at a radius of 9.4 EE 11 m from the Earth’s center. If the speed of the satellite is 20.5 m/s, what is the gravitational force acting on this satellite?

Go ask your teacher for help at this point.

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.