Question

During the spin cycle of a washing machine, the clothes stick to the outer wall of the barrel as it spins at a rate as high as 30 revolutions per second. The radius of the barrel is 0.26 m. Find how much time it takes to complete one revolution.

A. 0.03 seconds
B. 0.06 seconds
C. 0.1 seconds
D. 0.12 seconds

Answer 1

The time it takes to complete one revolution in the spin cycle of a washing machine can be found by calculating the period, which is the reciprocal of the frequency. In this case, the correct answer is 0.03 seconds (A).

Step-by-step explanation:

To find the time it takes to complete one revolution, we need to determine the period of the spinning cycle. The period is the time it takes for one full rotation. It can be calculated using the formula:

Period = 1 / Frequency

In the given question, the spin rate is given in revolutions per second, so the frequency can be obtained by converting the spin rate to Hertz (Hz). One revolution is equal to one cycle, so the time it takes to complete one revolution (the period) is the reciprocal of the frequency. Therefore, the correct answer is 0.03 seconds (A).