Question

A pendulum completes 2 oscillation in 5s.

a) What is the time period ?
b) If g =9.8 ms–², find it's length.
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Answer 1

1.551 m

Step-by-step explanation:

a) Period, T T = 5 s / 2 oscill = 2.5 seconds

b) T = 2 pi sqrt (L/g)

2.5 = 2 pi sqrt ( L/9.8) <===== solve for L = 1.551 m