Question

The figure shows an overhead view of a 1.80 kg plastic rod 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 friction. A disk of mass 33.0 g slides toward the opposite end of the rod with an initial velocity of 39.5 m/s. The disk strikes the rod and sticks to it. After the collision, the rod rotates about the pivot point.

(a)

What is the angular velocity, in rad/s, of the two after the collision?

What is the angular momentum of an object moving with a linear
velocity, about a given point? rad/s

(b)

What is the kinetic energy, in joules, before and after the collision?

*KE*_{i}

= J

*KE*_{f}

= J

Answer #1

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