Multiple Choice
An 80-N uniform plank leans against a frictionless wall as shown.The torque (about point P) applied to the plank by the wall is: 
A) 40 N.m
B) 60 N.m
C) 120 N.m
D) 160 N.m
E) 240 N.m
Correct Answer:
Verified
Correct Answer:
Verified
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