Question

What is the frequency of a pendulum that is moving at 30 m/s with a wavelength of 0.35

Answer 1

V=f*wavelength
30m/s=f*(0.35m)
f=85.7 Hz

Answer 2

Answer:

85.7Hz

Explanation:

We know that the wave velocity is given by:

v=f*λ

where:

f is the frequency

λ is the wavelength

rearranging the equation we have:

f=v/λ

$f=\frac{30m/s}{0.35m}\\f=85.7s^{-1}=85.7Hz$

so the pendulum has a frequency of 85.7Hz