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प्रश्न
The diagram shows a wheel of diameter 4 m, and pivoted at O. Calculate the moment of force about point (a) O, (b) Q, when a force F = 4 N acts at point P or Q.
संख्यात्मक
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उत्तर
Diameter of wheel = 4 m
∴ Radius of wheel = 2 m
(a) Moment of force about point O = F × ⊥ distance
= 4 N × 2 m
= 8 Nm in ACWD
(b) Moment of force about point Q = F × ⊥ distance between O and Q
= 4 N × 2 m
= 8 Nm in CWD
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