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6. Spinning Dumbbell Two small masses (m = 3.0 kg; M = 5.0 kg) are attached...

6. Spinning Dumbbell Two small masses (m = 3.0 kg; M = 5.0 kg) are attached to the ends of a thin light rod that isL = 16.0 cm long. The dumbbell is placed vertically at the edge of a frictionless table as shown in the diagram. The rod is struck at a height of ? = 12.0 cm above the center of mass of the lower mass, m, with an impulsive blow that lasts½ millisecond, and that rises linearly to a maximum force of 2000 N and then decreases to zero.

6. Spinning Dumbbell Two small masses (m = 3.0 kg;

a)What is the dumbbell’s center of mass with respect to the origin taken at the center of mass of the lower mass, m?

b) What is the dumbbell’s center of mass coordinate after ½ second ?

c) What is the angular position (in degrees) of the rod as measured clockwise from the vertical after¾ second?

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Co S 2 16 Ib 0.5 mls

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