Question

An object is spun around in circular motion such that its frequency is 0.05 Hz.

Answer 1

Answer:

a. 20 seconds

b. 160 seconds

Explanation:

a. Frequency is given by $f=\frac{1}{T}$, where $T$ is the period in seconds. Rearranging, we get $T=\frac{1}{f}$. Given that frequency is 0.05 Hz, we have:

$T=\frac{1}{0.05}=\boxed{20\text{ seconds}}$

b. Since we just found that it takes 20 seconds to complete one rotation (period), it will take $20\cdot 8=\boxed{160\text{ seconds}}$ to complete 8 rotations.