Question

The length of a simple pendulum is reduced to half. What will be its new time period?

Answer 1

Step-by-step explanation:

Period of a pendulum is 2pi sqrt (l/g) now reduce l to 1/2 l

period = 2pi sqrt ( 1/2l / g) = 2 pi * .707 sqrt ( l/g) <===== this is .707 the original

the time period is less by a factor of sqrt (1/2) = .707