A mass is suspended vertically from a spring so it is at rest at the equilibrium position. The mass is pulled a short distance straight down and released so that it oscillates about the equilibrium position. The speed of the mass is greatest when the mass is
A) at its highest point.
B) at the equilibrium position.
C) at its lowest point.
D) somewhere between the equilibrium point and maximum extension.

Question

Quizplus · Accepted Answer

The speed of the mass is greatest at the equilibrium position because this is where the kinetic energy is at its maximum, having been converted from potential energy during the oscillation.

A Mass Is Suspended Vertically from a Spring So It