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A spanner that has a length of 20cm has a moment of force equal to 80 Nm calculate the force required to turn the spanner

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400N

600N

700N

800N

answer is A.

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Detailed Solution

The moment of force is given as follows
Moment of force about a given axis = Force × perpendicular distance of force from the axis of rotation.
Force =

\frac{80}{0.2}

= 400N

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