A simple pendulum has a mass of 0.25 kg and a length of 1.0 m.It is displaced through an angle of 30 $\degree$ and then released.After a time,the maximum angle of swing is only 10 $\degree$.How much energy has been lost to friction?
A)0.29 J
B)0.65 J
C)0.80 J
D)1.0 J

Question

Quizplus · Accepted Answer

The energy lost to friction can be calculated by finding the difference in potential energy at the two maximum angles. The initial potential energy is higher due to the larger angle, and the energy lost is the difference between the initial and final potential energies.

A Simple Pendulum Has a Mass of 0 °\degree° And Then Released

A Simple Pendulum Has a Mass of 0 $\degree$ And Then Released