A mass is attached to a vertical spring and bobs up and down between points A and B. Where is the mass located when its kinetic energy is a maximum?
A) at either A or B
B) midway between A and B
C) one-third of the way between A and B
D) one-fourth of the way between A and B
E) none of the above

Question

Quizplus · Accepted Answer

The kinetic energy of the mass is maximum when it passes through the equilibrium position, which is midway between points A and B. At this point, the potential energy is minimum, and all the energy is kinetic.

A Mass Is Attached to a Vertical Spring and Bobs