Recent content by darkduck

B is the force at B. X is the angle, because it's unknown...

When I'm going to find the torque around A from B: The length to B from A = 3L/4 - L/4 = L/2 T=L/2*Cosx*B is this correct?

Is the forces right on that drawing?When I'm going to calculate the torque around A, the torque of A will be 0 (because the arm is 0). Is it right that when I shall find the two others torques around i have to use the arm times the force?

Homework Statement Consider a do or, hanging on two hinges (s ee figure). The do or is L tall and d wide, and the hinges are placed at heights L/4 (point A) and 3 L/4 (point B) from the floor. The door is uniform, and so its centre of mass is in the middle of the door (point C) b) What is the...