A mass on a spring oscillates with an amplitude of 5.0 cm.What is the position of the mass when the kinetic and potential energies are equal?
A)There is not enough information provided to answer this question.
B)1.2 cm
C)2.5 cm
D)3.5 cm
E)3.8 cm

Question

Quizplus · Accepted Answer

The kinetic and potential energies are equal at a position where the displacement is $\sqrt{1/2}$ of the amplitude. Given an amplitude of 5.0 cm, the position is $5.0 \times \sqrt{1/2} = 5.0 \times 0.707 \approx 3.5$ cm.

A Mass on a Spring Oscillates with an Amplitude of 5.0