# Kinetic Energy of a Simple Pendulum System#

The figure below shows a simple pendulum. The length of the string is $$l$$ and the bob has mass $$m_1$$.

## Question Text#

If the mass is released from rest when $$\theta = {{ params.theta }}^{\circ}$$, at which values of $$\theta$$ does the mass have half of its maximum kinetic energy?