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April 23, 2014

Homework Help: physics

Posted by Vishnu on Saturday, October 11, 2008 at 6:08pm.

A pendulum consists of an object of mass 1.07 kg that hangs at the end of a massless bar, a distance 1.14 m from the pivot point. Calculate the magnitude of the torque due to gravity about the pivot point if the bar makes an angle of 22 with the vertical.

torque = weightpendulum*cos22*1.14
= 1.07 kg x cos22 x 1.14 kg
= -1.22 kg
= 1.22 kg

Why am I getting this answer incorrect?

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