# Pivoting Stick

1. Nov 30, 2004

### Naeem

A stick of uniform density with mass M = 7.6 kg and length L = 0.8 m is pivoted about an axle which is perpendicular to its length and located 0.13 m from one end. Ignore any friction between the stick and the axle.

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a) What is the moment of inertia of the stick about this axle?
Iaxle = kg m2
1.621333 NO

HELP: Use the parallel-axis theorem.

i.e Icom + Mh2, how to apply that here.

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The stick is held horizontal and then released.
b) What is its angular speed as it passes through the vertical

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c) What is its angular acceleration as it passes through the vertical position?

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d) What is the magnitude of the vertical component of the force exerted by the stick on the axle when the stick passes through the vertical?
|Fvertical| = N

Somebody help me with all these parts!!!

2. Dec 1, 2004

### jmerickson

did you figure out part d yet i am working on the same problem