The spin cycles of a washing machine have two angular speeds, 414rev/min and 613

Question

The spin cycles of a washing machine have two angular speeds, 414rev/min and 613rev/min . The internal diameter of the drum is 0.450m .

Part A

What is the ratio of the maximum radial force on the laundry for the higher angular speed to that for the lower speed?

Part B

What is the ratio of the maximum tangential speed of the laundry for the higher angular speed to that for the lower speed?

Part C

Find the laundry's maximum tangential speed .

Part D

Find the laundry's maximum radial acceleration, in terms of g .

Explanation / Answer

A) Radial forces ratio = n2^2/n1^2 = (613/414)^2 = 2.19

B) Ratio between maximum tangential speeds = n2/n1 = (613/414) = 1.48

C) Maximum tangential speed V = ?*r

D) Maximum radial acceleration = V^2/r/g

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