One end of a massless rope is attached to a mass m, the other end is attached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley as shown in the below figure. Mass m accelerates downward at 5.0 m/s2 What is m?
T.0 kg
O 3.0 kg
O 20 kg
O 1.5 kg
O 1.2 kg

Consider a small frictionless puck perched at the top of a fixed sphere of radius r. if the puck is given a tiny nudge so that it begins to slide down, through what vertical height will it descend before it leaves the surface of the sphere? [hint: use conservation of energy to find the puck's speed as a func e conservation of energy to find the puck's speed as a function of its height at what value of this normal force does the puck leave the sphere? ] here on the puck.