Pivot Putty
A piece of putty of mass m = 0.75 kg and velocity v = 2.5 m/s moves on a
horizontal frictionless surface. It collides with and sticks to a rod of mass
M = 2 kg and length L = 0.9 m which pivots about a fixed vertical axis at the
opposite end of the rod as shown. What fraction of the initial kinetic energy of the putty is lost in this collision?
KElost/KEinitial =
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