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A 16 N force produce a moment of 64 Nm. The moment arm is
1. 2 m
2. \(\sqrt 2 \;m\)
3. 8 m
4. 4 m

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Correct Answer - Option 4 : 4 m

Concept:

Moment is the product of force multiplied by the moment arm length.

Moment = Force × (moment arm length)

Calculation:

Given:

Force = 16 N, moment = 64 Nm

Moment arm length = 64/16 m

Moment arm length = 4 m

Hence, the length of moment arm is 4 m.

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