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 declines
It declines

It remains the same
It remains the same

It is not conserved
It is not conserved

It becomes greater.

Answer 1

If we don’t consider friction, the total mechanical energy of the pendulum remains the same as it swings from position A to position B. This is due to the principle of conservation of mechanical energy, which states that in the absence of non-conservative forces (like friction), the total mechanical energy (the sum of potential and kinetic energy) will remain constant.

So the correct response is:

It remains the same.