Install GENESIs fors Matricom Media Center-eSmartook 1+ 108:Retational Motion >·

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Install GENESIs fors Matricom Media Center-eSmartook 1+ 108:Retational Motion >· webassic The figure shows an overhead view of a 2.40- friction. A disk of mass 37.0 g slides toward the about the pivot point kg plastic red of length 1.20 m on a table. One end of the rod is attached to the table, and the rod is free to pivot about this point without mass 37.0 g slides toward the opposite end of the rod with an initial velocity of 35.5 m/s. The disk strikes the rod and sticks to it. After the collision, the rod rotates disk pivot (a) What is the angular velocity of the two after the coffision? rad/s (b) What is the kinetic energy before and after the colfision? KE Supporting Materials Physical Constants Additional Materials Reading

Explanation / Answer

conserving angular momentum of the system

0.037 x35.5 xL = (2.4 L^2/3 + 0.037 L^2 )w

w = 1.3077 rad/sec

b)

KE = 0.5x0.037x35.5x35.5 = 23.3146 J

KE = 0.5 Iw^2 = 1.0301.03056J

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