Dynamics (Forces and Newton's Laws of Motion)

Dynamics Principles

Dynamics Principles

Articles
Title
The Moon has a mass of 7.4 X 10^22 kg and a distance from the Earth of 3.8 X 10^8 m. The Earths mass is 6 X 10^24 kg. What is the magnitude of the gravitational potential energy of the Moon?
Two children make a seesaw out of a 5.0-m wooden plank. They balance it on a fulcrum located 2.0 m from the left end. The 42.0-kg child sits at the end of the plank on the left side. What distance (measured from the fulcrum) can the 35-kg child sit on the
A block with a mass of 30 kg is hanging still from a string. If you place another block with a mass of 10 kg at a distance of 2 m away, what is the gravitational attraction between the two blocks?
A skier weighing 70 kg pushes off from the top of a ski slope with a force of 105 N directed down the slope. The slope is inclined at 30°.Assuming that the slope is frictionless, what is the initial rate of the skiers acceleration during the push-off?

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