Question

A pendulum oscillates 40 times in 4 sec. Find its time period and frequency

Answer 1

hello user!

frequency of oscillations is the number of oscillations of a body per second.

so, frequency = 40Hz

and vibrations per 4seconds =10Hz

time period is the time required to complete one oscillation

therefore, time period = 1/10 (or) 0.1 sec.

Answer 2

1. Time period = 40/4

                       = 10

2. Frequency = 0.1 heartz