(a)
Net torque acting on the rod is,
tow = 3*F1 - (3+L) * F2
5.2= 3*7.9 - (3+L) * 7.9
Solve for L
L= 0.658 m
----------------------------
(b)
Net torque is clockwise.
---------
(c)
Net torque acting on the rod is,
tow =L*F1
5.2 = L * 7.9
L = 0.658 m
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