The pendulum in the diagram below swings from position A to B.

Question

If we don’t consider friction, what happens to the total mechanical energy as the pendulum swings from position A to position B?

(1 point)
Responses

It is not conserved
It is not conserved

It declines
It declines

It remains the same
It remains the same

It becomes greater.

Answer 1

The correct response is:

It remains the same.

In the absence of friction and other non-conservative forces, the total mechanical energy of the pendulum (the sum of its potential and kinetic energy) is conserved as it swings from position A to position B.