Question

a pendulum completes 2 oscillations in 5 seconds . what is its time period ? If g = 9.8ms-² , find its length​

Answer 1

Answer:

Time period = 2.5s Length = 1.55m

Explanation:

Time period = (oscillation per second)^-1

(2/5)^-1 = 5/2 = 2.5s

Length = T²/4π² × g = (2.5)²/4π² × 9.8 = 1.55m