Question

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

Ans. Given that,
Number of oscillation = 40
Total time taken = 4 seconds
Time period= time taken in One oscillation/ Total number of oscillation

= 4 seconds/ 40 = 1/10 second= 0.1 second

Again,
frequency
= Number of oscillations per second
number of vibrations/ Time taken

= 40/ 4 second

= 10 per second

= 10 Hz.
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Is it correct?

Answer 1

Answer:

yes , it's right....