Elevator problem with safety rails, spring, and a snapping cable---> The cable of an 1800 kg elevator snaps while it is 3.7 meters above a spring with constant of k = 0.15 MN/m. Also, a safety guide rail device provides a 4.4 kN frictional force against the fall for the duration of the fall. a) What is speed of cab just before hitting the spring? b) What is the maximum distance x that the spring is compressed (frictional force still applies during the compression of the spring)? c) How far will the cab bounce back up the shaft? d) What is the total distance the cab will move before coming back to rest? Help, I have been trying to figure this out for 3 hours!