Q9: Prb 1 - What torque, in newton meters, are you exerting relative to the hinges?

Question

When opening a door, you push on it perpendicularly with a force of 65 N at a distance of 0.825 m from the hinges.

Answer 1

You can use the standard equation for this problem.

T = r F sinθ or in AP Physics 1 they use T = r F_⊥ where F_⊥ is the perpedicular component of force.

That gives,

T = (0.825 m)(65 N) sin(90°) = 53.63 Nm