Question

The following diagram of a pendulum shows the path it takes as it swings back and forth.


As the pendulum moves from point 1 to point 3, what happens to its mechanical energy?
A.
Potential energy is converted to kinetic energy and back again.
B.
Kinetic energy is converted to potential energy only once.
C.
Potential energy is converted to kinetic energy only once.
D.
Kinetic energy is converted to potential energy and back again.

Answer 1

I believe it should be B

Answer 2

A pendulum is a suspended weight from a pivot to swing freely. When the pendulum is displaced from the side it is subjected to restoring force due to the effect of gravity.

• Potential energy is transformed to kinetic energy and back again. Once the weight of the pendulum is released it gets active and gravity pulls it back. The potential energy is converted to the kinetic energy and is exerted by the moving object.

Hence the option A is correct.

Learn more about the diagram of a pendulum which is  path it takes as it swings back and forth.

brainly.com/question/3408099.