Statics: Using Torque Now consider a plank of mass M suspended by two strings as shown. We want to find the tension in each string First use∑F=0 71+72=Mg cm M This is no longer enough to L2 solve the problem 14 1 equation, 2 unknowns Mg We need more information ! Physics 121: Lecture 17, Pg 7Physics 121: Lecture 17, Pg 7 Statics: Using Torque Now consider a plank of mass M suspended by two strings as shown. We want to find the tension in each string: L/2 L/4 x cm M T1 T2 Mg y x First use F = 0 T1 + T2 = Mg This is no longer enough to solve the problem ! 1 equation, 2 unknowns. We need more information !!