Asked by Tyger2020

A 2.20 kg pendulum starts from a height of 5.00m. It swings back and forth through one whole oscillation but only returns to a maximum height of 4.75m. How much negative work was done on the pendulum during the first entire oscillation?

Answered by Scott
the "negative work" is equal to the lost potential energy due to the height difference

5.00 m g - 4.75 m g