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Torque

A wheel of di...

Question

A wheel of diameter 2 m is shown in the figure with an axle at O. A force F = 2 N is applied at B in the direction shown in figure. Calculate the moment of force about (i) the centre O, and (ii) the point A.

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Solution

Moment of force about O = Force $\times$ OB = 2 N $\times$ 1 m = 2 Nm

Moment of force about A = Force $\times$ AB = 2 N $\times$ 2 m = 4 Nm

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