PH-601

Moments

Physics · Secondary 3 · Medium · Moments

A 2.0 m long uniform plank is balanced horizontally on a pivot placed 0.50 m from its left end. The weight of the plank is 120 N acting at its centre. What is the moment of this weight about the pivot?

$60\,\text{N m}$
$30\,\text{N m}$
$120\,\text{N m}$
$240\,\text{N m}$

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