Q. A 2.20 kg block, resting on a frictionless surface, is attached to a horizontal spring of constant k = 520 N/m. A 13.00 gram bullet travelling 600 m/s penetrates and stops in the block.
1. What is the period of the resulting oscillatory motion?
2. What is the amplitude of the motion?
Q. A girl rides an escalator that moves her upward at a constant speed. As the girl rises, how do her gravitational energy and kinetic energy change?