A 4.8 kg weight, mw, slides down a frictionless ramp that is at an angle of  = 22 with respect to the horizontal. The weight is attached to a massless string, which in turn is threaded over a pulley (solid disk) of radius rp = 4.5 cm and mass mp = 0.55 kg. The string is then wound around a thin hollow metal cylinder (hoop) of radius rc = 9.4 cm and mass mc = 8.6 kg. Assuming the wheel starts from rest, find its velocity after it has traveled a distance s = 15 cm down the ramp.

Amoving company collects data about couches they move and displays the data in a table. the force along the ramp, the angle of the ramp, and the height the couch is raised to are shown. which statements correctly compare the work done to move the couches? check all that apply. the same amount of work is done for couches 1 and 3. the same amount of work is done for couches 2 and 3. the work for couch 1 is greater than the work for couch 2. the work for couch 2 is less than the work for couch 3. the work for couch 3 is greater than the work for couch 1. the work for couch 2 is greater than the work for couch 1.