Q1. A 1250 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1960 N crate hangs from the far end of the beam.
Q2. Dan is gliding on his skateboard at 2.0 m/s. He suddenly jumps backward off the skateboard, kicking the skateboard forward at 8.0 m/s. How fast is Dan going as his feet hit the ground? Dan's mass is 60 kg and the skateboard's mass is 5.0 kg.
Q3. A 18 kg box slides 4.0m down the frictionless ramp (30 degrees) shown in the figure , then collides with a spring whose spring constant is 140 N/m. What is the maximum compression of the spring, and at what compression of the spring does the box have its maximum speed?