In an undergraduate physics lab, a simple pendulum is observed to swing through 71 complete oscillations in a time period of 1.80 min. What are the period and length of the pendulum

Explanation:

We have

A simple pendulum is observed to swing through 71 complete oscillations in a time period of 1.80 min.

The frequency of a pendulum is equal to the no of oscillation per unit time. so,

Tim period is reciprocal of frequency. So,

The time period of a pendulum is given by :

l is length of pendulum

So, the period and length of the pendulum are 1.53 s and 0.58 m respectively.

answer: b.

explanation: