A pencil mass 5.8g and length 8.3cm is at first balanced so, Ask an Expert

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Q1. A pencil (mass 5.8g and length 8.3cm) is at first balanced so that it is sitting vertically on a flat table. If the pencil then falls, find its angular velocity just before it strikes the tabletop. Assume that the mass of the pencil is distributed uniformly and that the end of the pencil in contact with the table does not slip.

Q2. A load of bricks with mass = 16.0 hangs from one end of a rope that passes over a small, frictionless pulley. A counterweight of mass = 28.40 is suspended from the other end of the rope. The system is released from rest.

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