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Intro to Torque

A 10 kg mas...

Question

A $10 k g$ mass is suspended from a beam $1.2 m$ long. The beam is fixed to a wall. Find the magnitude and direction (clockwise or anti-clockwise) of the resulting moment at point $B$ .

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Solution

Torque about $B$
$z = r \times f = 1.2 i \times 10 g (- j) = 12 g (- k) = 117.6 N m$
clockwise.

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