Question

A pendulum with a length of 1.5 meters is released from an angle of 20 degrees.What is the period and frequency of this pendulum?

Answer 1

The period and frequency of this pendulum are 2.457 s and 0.407 Hz.

Step-by-step explanation:

Given that,

Length = 1.5 m

Angle = 20°

We need to calculate the period

Using formula of period

`T = 2\pi\sqrt{(L)/(g)}`

Where, T = time period

g = acceleration due to gravity

l = length

Put the value into the formula

`T=2*3.14\sqrt{(1.5)/(9.8)}`

`T=2.457\ sec`

We need to calculate the frequency

`T = (1)/(f)`

`f=(1)/(T)`

Put the value of T

`f=(1)/(2.457)`

`f =0.407\ Hz`

Hence, The period and frequency of this pendulum are 2.457 s and 0.407 Hz.