A a man applies a force of f 300 102 n at an angle of, Ask an Expert

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(a) A man applies a force of F = 3.00 102 N at an angle of 60.0° to a door, x = 1.90 m from the hinges. Find the torque on the door, choosing the position of the hinges as the axis of rotation.

N · m

(b) Suppose a wedge is placed 1.50 m from the hinges on the other side of the door. What minimum force must the wedge exert so that the force applied in part (a) won't open the door?

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