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Two 1.9 kg balls are attached to the ends of a thin rod of negligible mass,...

Two 1.9 kg balls are attached to the ends of a thin rod of negligible mass, 62 cm in length. The rod is free to rotate in a vertical plane about a horizontal axis through its center. With the rod initially horizontal as shown, a 0.42 kg wad of wet putty drops onto one of the balls with a speed of 3.2 m/sec and sticks to it.

1)

What is the ratio of the magnitude of angular momentum of the entire system just after the collision to just before the collision? (|L|after/|L|before)

2)

What is the angular speed of the system just after the putty wad hits?

rad/sec

3)

What is the ratio of the kinetic energy of the entire system just after the collision to just before the collision? (KEafter/KEbefore)

4)

Through what angle will the system rotate until it momentarily stops?

Solutions

Expert Solution

genius_generous answered 2 years ago
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