Question

A pendulum oscillates 480 times in 2 minutes. Find its time period and frequency. ( please give correct answer ) ​

Answer 1

Question :-

A simple pendulum completes 420 oscillations in 2 minutes.Calculate its frequency and time period.

Given that,  

Number of oscillations is 420 in 2 minutes or 120 seconds.

To find,  

Its frequency and the time period.

Solution,  

Frequency is defined as the number of oscillations per unit time. So, the frequency of a simple pendulum is given by :

f=420/120 s

f = 3.5 Hz(Ans)

The formula of time period in terms of frequency is given by :

T=1/f

T=1/3.5

T = 0.28 seconds(Ans)

Answer 2

Answer:

Frequency - 4 hz

Time period - 0.25 sec

Explanation:

Frequency - 480/120

- 4 hz

Time period - 120/480

- 0.25 sec