5. A rollercoaster car with a mass of 4500 kg reaches its highest point of 139 m above the surface of the moon. Its gravitational potential energy is 1,013,310 J. What is the acceleration of gravity on the
moon?

A200-n force is applied to the foot-operated air pump. the return spring s exerts a 2.6-n·m moment on member oba for this position. determine the corresponding compression force c in the cylinder bd. if the diameter of the piston in the cylinder is 40 mm, estimate the air pressure generated for these conditions. state any assumptions. enter a positive number for the compression force c.