Question

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

Answer 1

Answer:

time period=0.1 second

frequency=10 Hz

Explanation:

time period is the time taken to complete one oscillation.

time period=4/40=0.1 seconds

frequency=1/time period=1/0.1=10Hz

Answer 2

Answer:

The number of oscillations per second of the vibrating body is known as the frequency of oscillation.

Frequency = Total number of oscillations

Total time taken

= 50/5

= 10 Hz

Time period is the time taken to complete one oscillation. It is also the inverse of frequency.

Time period = 1/ Oscillating frequency

= 1/10

= 0.1 s

∴ frequency = 10 Hz

Time period = 0.1 s