(Solved): Static Equilibrium Points:30 A plank, of length L = 4.0 m and mass M = 7.4 kg, rests on the ground ...

Static Equilibrium Points:30 A plank, of length L = 4.0 m and mass M = 7.4 kg, rests on the ground and on a frictionless roller at the top of a wall of height h = 2.00 m (see Figure). The center of gravity of the plank is at its center. The plank remains in equilibrium for any value of > 62° but slips if < 62°. Calculate the magnitude of the force exerted by the roller on the plank when = 62°. L 1? ? Submit Answer Tries 0/40 Calculate the magnitude of the normal force exerted by ground on the plank when 0 = 62°. Submit Answer Tries 0/40 Calculate the magnitude of the friction force between the ground and the plank when 0 = 62°. Submit Answer Tries 0/40 Post Discussion 83°F Cloudy ENG Send Feedback 2:11 PM 7/9/2022