As shown in the figure, a disk of mass m = 600 grams is placed on a rotating tur

Question

As shown in the figure, a disk of mass m = 600 grams is placed on a rotating turntable sothat the disk spins with the turntable at a constant radius of50.0 cm from the center. The disk hasa constant speed. The disk is tied to a cylinder, which has a massof 3m, by a string that passes through a hole in the center of theturntable. As the disk and the turntable spin, the cylindermaintains its position vertically. Use g = 10 m/s2.

(a) Determine the value of the tension in the string. Assumethat there is no friction between the disk and the turntable.

Explanation / Answer

m = 600 g, R = 50.0 cm, g = 10 m/s2, a) T = 3mg = 1.8 N b) T = mv2/R v = (TR/m) = 1.22 m/s

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