Question

You measure the time it takes for a pendulum to swing back and forth 10 times as 13.4 s. Assuming the oscillations are small enough for the small-angle approximation to apply, how long is the pendulum?

a. 1.16 m

b. 1.35 m

c. 0.733 m

d. 0.446 m

Answer 1

From the 10 oscillations, we can calculate time period as-

we know the formula for time period-

using the values, we get the length of the pendulum as-

on solving this,

we get the length of the pendulum as-

Option (d.) is the correct answer.

Thankyou

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