A uniform 13-kg trap door is oriented horizontally and hinged as shown. What is the magnitude of the torque on the door at the instant that the release is activated and the door can freely rotate?
A)4.9 N . m
B)9.8 N . m
C)48 N . m
D)72 N . m
E)96 N . m

Question

A uniform 13-kg trap door is oriented horizontally and hinged as shown. What is the magnitude of the torque on the door at the instant that the release is activated and the door can freely rotate? 
A)4.9 N . m 
B)9.8 N . m 
C)48 N . m 
D)72 N . m 
E)96 N . m

Quizplus · Accepted Answer

The Answer is C

A Uniform 13-Kg Trap Door Is Oriented Horizontally and Hinged