[SOLVED] a pendulum makes 40 vibrations in 20 seconds. calculate it's period?

Answer : Time period will be 0.5 seconds.Explanation : We can use the formula as;f = c / λf = wave speed c (units m/s) / wavelength λ (units m). Here, c = 40 and λ = 20;f = 40 / 20 = 2 HzThe formula for finding time period is: [tex] T (period) = \frac{1}{f} [/tex] where f = frequencyWe have, f = 2 Hz;[tex] T (period)= \frac{1}{2} [/tex] = 0.5 second.Therefore, time period will be 0.5 seconds.

a pendulum makes 40 vibrations in 20 seconds. calculate it's period?

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