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

Answers

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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