A man pulls a box up a incline to rest at a height of . He exerts a total of of work. What is the coefficient of friction on the incline?

Suppose that a student pushes his physics textbook across the table with his hand. In doing so, what type of force is acting on the book?

Mass of Mars:

Universal gravitation constant:

Radius of Mars:

A buggy on the surface of Mars locks up it's break and slides on Martian ice. If the buggy was traveling at and took to stop. Determine the coefficient of friction between Martian ice and the tires.

Consider the following system:

If the mass is and , what is the tension, ? Assume no frictional forces.

Nicola is attempting to create a single tiered mobile as shown. She has a wooden dowel (, ), and two distinct bird ornaments (, ) which she wishes to attach on either end of the dowel.

If Nicola places ornament , to the left of the dowel's midpoint, and ornament , to the right of the dowel's midpoint, where should she attach the mobile string in order for it to balance?

Note: figure not drawn to scale.

An astronaut is in orbit around the earth. The feeling of weightlessness that he experiences is due to the absence of which force?

A man pulls a box up a incline to rest at a height of . He exerts a total of of work. What is the coefficient of friction on the incline?

Two asteroids in space are in close proximity to each other. Each has a mass of . If they are apart, what is the gravitational force between them?

A man pulls a box up a incline to rest at a height of . He exerts a total of of work. What is the coefficient of friction on the incline?

Consider the following system:

If the mass is and , what is the tension, ? Assume no frictional forces.