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प्रश्न
Calculate the magnitude of the force of a couple, when the arm of the couple is 63 cm and the moment of the couple is 21 Nm.
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उत्तर
Moment of couple = F × Arm of couple
21 Nm = F × 63 cm
21 Nm = F × 0.63 m
F =`21/0.63` = 33.33 N.
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