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# Moment of Force about given points

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9. A force of magnitude 3 units acts at the point with coordinates (1,2,3). The force is applied in the direction of the vector 3i - j + 4k. Find the moment of the force about O. Also find the moment of the force about the point with coordinate (1,2,3)

##### Solution Summary

Moment of a force, acting at a given point, is calculated with respect to a given point.

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magnitude of force |F| = 3
direction of force: 3i - j + 4k
unit vector along force F_cap = (3i - j + 4k)/sqrt(3^2 + 1^2 + 4^2)
Hence, force ...

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• MSc , Pune University, India
• PhD (IP), Pune University, India
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