Question

The amplitude of a pendulum is most commonly measured in which units ?1)feet2)seconds3)degrees

Answer 1

Although, the amplitude can be measured in the degree also.

But, the amplitude of a pendulum in the most common ways is determined as a length.

As the length can be measured in feet.

Thus, among the other options, the feet unit is most commonly used to measure the amplitude.

Hence, the first option is the correct answer.