Question

when a 50N object is hung from the 20cm mark of a 100cm uniform metal tube which is pivoted at 40cm mark,the tube balances.calculate the weight of the tube
bobpursley
cg is at 50 cm mark. measuring torque from 40cm mark.
counterclosetorque+clockwisetorque=0
10cm*Weight+(-20cm*50N)=0
weight= 100N

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