There is a clever kitchen gadget for drying lettuce leaves afteryou wash them. I

Question

There is a clever kitchen gadget for drying lettuce leaves afteryou wash them. It consists of a cylindrical container mounted sothat it can be rotated about its axis by turning a hand crank. Theouter wall of the cylinder is perforated with small holes. You putthe wet leaves in the container and turn the crank to spin off thewater. The radius of the container is 11 cm. When the cylinder is rotating at2.0 revolutions per second, what isthe magnitude of the centripetal acceleration at the outerwall?

Explanation / Answer

Given: r = .12 m = 1.7 rev per second Time to complete 1 revolution T = (1/1.7) = .588 seconds a = v2/r = rw2 = r(2/T)2 =42r / T2 a = 42(.12) / (.588)2 a = 13.7 m/s^2

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