A door can rotate about its hinge line which is taken as the axis
PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A door can rotate about its hinge line which is taken as the axis. A push applied at the handle tends to turn the door clockwise when viewed from above. If a student chooses counter-clockwise torques as positive, how will he record the sign of the torque produced by this push?
(a) Positive
(b) Zero
(c) Negative
(d) Either positive or negative depending on angle of application