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 potential energy is a minimum?
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

When a mass attached to a spring oscillates between two points, its potential energy is minimum when it is at the equilibrium position, which is the midpoint between the two points A and B. Therefore, the correct choice is B.

A Mass Is Attached to a Vertical Spring and Bobs