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

Question

It is not conserved

It declines

It becomes greater.

It remains the same

Answer 1

If we don't consider friction, the total mechanical energy of a pendulum is conserved as it swings from position A to position B. The total mechanical energy is the sum of potential energy and kinetic energy, and in the absence of non-conservative forces (like friction), this total remains constant throughout the motion.

So, the correct answer is:

It remains the same.