A rotational axis is directed perpendicular to the plane of asquare and is locat

Question

A rotational axis is directed perpendicular to the plane of asquare and is located as shown in the drawing. Two forces,F1 and F2,are applied to diagonally opposite corners, and act along the sidesof the square, first as shown in part a and then as shownin part b of the drawing. In each case the net torqueproduced by the forces is zero. The square is one meter on a side,and the magnitude of F2 is 2 times that of F1. Findthe distances a and b that locate the axis. Notethat a and b are not drawn to scale.
a = m
b = m

Explanation / Answer

we have F2*a=F1*b F1(1-a)=F2*b F2=2*F1 =>2a=b 1-a=2b => a=0.2 m b= 0.4 m

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