# For equilibrium the clockwise rotation or torque must equal the counterclockwise! If this were not true…

For equilibrium the clockwise rotation or torque must equal the counterclockwise! If this were not true the object would start spinning. The torque of W about X is just W * Lw and the torque of T2 about X is T2 * L2. So for rotational equilibrium W * Lw = T2 * L2. The distances Lw and L2 are called the lever anus of the forces. 1. Using the preceding picture assume that the stick is a meter stick, that T1 = 100.0 N, and that T2 = 150.0 N. Find how large W must be for the stick to be in translational equilibrium and where it must be applied along the stick for the stick to be in rotational equilibrium. Be sure to start working the problem by drawing a FBD showing the forces on the stick! 2. Now assume the stick has a mass of 0.100 kg and repeat the above exercise. Note that the force of gravity is effectively acting at the COM of the stick, in this case the middle or 50.0 cm mark. Attention: You cannot Use the equation given above. Use the method described to come up with the new equation. Hint: There are now four forces acting on the stick, not three!