Torque and Static Equilibrium · PhysicsBowl 2010 #16
Physics · mechanics
Problem
A mass M1=40kg is at the very edge of a 6.0m long plank which is pivoted about its center of mass located directly at the center of its length. How far from the center of the plank should the mass M2=80kg be placed so that the plank remains in static equilibrium in a horizontal position?
(A) 0.50m (B) 1.33m (C) 1.50m (D) 2.00m (E) 3.00m