Sunday
December 21, 2014

Homework Help: Physics

Posted by Jimmy on Friday, October 31, 2008 at 2:53pm.

A long uniform rod of length 6.66 m and mass 6.74 kg is pivoted about a horizontal, frictionless pin through one end. The rod is released from rest in a vertical position as in the figure.

Question 1:

At the instant the rod is horizontal, find its angular speed. The acceleration of gravity is 9.8 m/s2 . Answer in units of rad/s.

Question 2:

At the same instant find the magnitude of its angular acceleration. Answer in units of rad/s2.

Question 3:

Still at the same instant find the magnitude of the acceleration of its center of mass. Answer in units of m/s2.

Question 4:

Finally, find the magnitude of the reaction force at the pivot (still at the same moment). Answer in units of N.

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