A 2kg mass is suspended on a rope that wraps around a frictionless pulley attached to the ceiling with a mass of 0.01kg and a radius of 0.25m. The other end of the rope is attached to a massless suspended platform, upon which 0.5kg weights may be placed. While the system is initially at equilibrium, the rope is later cut above the weight, and the platform subsequently raised by pulling on the rope.
The rope is cut right above the 2 kgmass. What is the acceleration of the platform with the individual weights as it falls to the ground?
ball is dropped off of a roof. If the ball takes four seconds to hit the ground, what is the ball's speed right before it hits the ground?