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# Energy over Time

APPH12-UWOYWG

The graph above shows data collected with a motion sensor for the velocity of a pendulum bob as a function of time as the pendulum undergoes simple harmonic motion.

Which of the following conclusions is inconsistent with the data from this graph?

A

Over time, the maximum kinetic energy of the bob decreases.

B

Over time, the maximum potential energy of the bob decreases.

C

Over time, the mechanical energy of the pendulum-Earth system is constant.

D

Over time, the internal energy of the pendulum and its surroundings increases.