Question

hey mates,
......
QUESTION - a simple pendulum makes 15 oscillations in 30 seconds .what is the time period and frequency of its oscillations..??

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Answer 1

⭐⭐⭐⭐⭐ ANSWER ⭐⭐⭐⭐⭐

⏹ DETAILED CONCEPT AND SOLUTION :

✨ WHAT IS A SIMPLE PENDULUM?

➡ A simple pendulum is a heavy point mass suspended from a rigid support by a massless and inextensible string.

✨ WHAT IS OSCILLATION?

➡ One complete to and fro motion of the bob of simple pendulum is called one oscillation.

✨ SOLUTION :

No. Of Oscillations in 30 sec = 15
No. Of Oscillations in 1 sec = (15/30) = 1/2 = 0.5

So, frequency = No. Of oscillations in one second = 0.5 Hz.

Time period = 1/Frequency
= (1/0.5) second.
= 2 second.

➡ Ultimately, we get, frequency of oscillation is 0.5 Hertz and Time period of oscillation is 2 second.

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✨ FORMULAS TO REMEMBER :-

1) FREQUENCY = 1/T (WHERE, T = TIME PERIOD)

2) TIME PERIOD = 1/F (WHERE, F = FREQUENCY)

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⭐⭐⭐ ALWAYS BE BRAINLY ⭐⭐⭐