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 torque from each of the 3 forces around point A?
The Attempt at a Solution
I'm not qute sure what i'm going to do. Are the forces from the two hinges pointing upwards or 45 degrees north east?
When i'm going to find the torques around point A, should i just use T=fx ? The torque to point B will then be straight forward, but for find the torque to point C i have to decomposed the direction 45 degrees north east?