A picture shows A student is demonstrating the transformation of kinetic and potential energy in a system using the pendulum shown below.

Question

At which point in this system does the pendulum bob demonstrate minimum potential energy?

A.
1

B.
2

C.
3

D.
4

Answer 1

In a pendulum system, potential energy is at a maximum when the pendulum bob is at its highest points (the highest points of its swing) and at a minimum when the pendulum bob is at its lowest point (the lowest point of its swing).

Assuming the points are marked as follows:

• Point 1: Maximum height (Top left)
• Point 2: Medium height
• Point 3: Midpoint (lowest point during the swing)
• Point 4: Medium height (restored sideways)

The pendulum bob demonstrates minimum potential energy at the lowest point of its swing, where kinetic energy is at its maximum.

Thus, the answer is:

C. 3