Question

A simple pendulum completes420 os cillations in 2 minutes .calculate it's frequency and time period

Answer 1

Answer:

time= 3/7 Second

frequency = 7/3 Hertz

Explanation:

420 oscillations in = 2 mins = 2×60 Seconds= 120 s

in 1 s oscillations= 420/120 = 7/3

therefore 1 oscillation in = 3/7 s

frequency = 1/ time = 1/(3/7) = 7/3 Hertz

hope it's helpful !