Directions
Read the following questions. Choose the right answer.
There is only ONE correct answer to each question.
[Figure: a pendulum swings between points a and c, passing through the lowest point b.] When the pendulum bob moves from point (b) to point (c), its potential energy is:
- zero
- unchanged
- increasing
- decreasing
Show answer
Correct answer: C. increasing
Why
As the bob swings up from the lowest point (b) to a higher point (c), its height increases, so its gravitational potential energy increases.