Question

A wheel makes 10 rotations in 50 s.
a. What is the period of its rotation?
b. What is the frequency of its rotation?

Answer 1

A. The period of its rotation is 5 s

B. The frequency of its rotation is 0.2 Hz

Data obtained from the question

• Number of rotation (n) = 10

• Time (t) = 50 s

A. Determination of the period

• Number of rotation (n) = 10

• Time (t) = 50 s

• Period (T) =?

The period of the rotation can be obtained as follow:

T = t/n

T = 50 / 10

T = 5 s

B. Determination of the frequency

• Period (T) = 5 s

• Frequency (f) =?

The frequency of the rotation can be obtained as follow:

f = 1/T

f = 1/5

f = 0.2 Hz

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