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MBA, Ph.D in Management
Harvard university
Feb-1997 - Aug-2003
Professor
Strayer University
Jan-2007 - Present
A device consisting of four heavy balls connected by low-mass rods is free to rotate about an axle. It is initially not spinning. A small bullet traveling very fast buries itself in one of the balls. In the diagram, m = 0.005 kg, v = 400 m/s, M1 = 1.7 kg, M2 = 0.3 kg, R1 = 0.7 m, and R2 = 0.4 m. The axle of the device is at the origin < 0, 0, 0 >, and the bullet strikes at location < 0.216, 0.666, 0 > m.
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Just after the impact, what is the angular speed of the device? Note that this is an inelastic collision; the system's temperature increases.
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