A string is tied to a doorknob 0.72 m from the hinge as illustrated in the figure.At the instant shown, the force applied to the string is 5.0 N.What is the magnitude of the torque on the door?
A)2.1 N . m
B)3.0 N .m
C)1.0 N . m
D)0.78 N . m
E)0.60 N . m

Question

A string is tied to a doorknob 0.72 m from the hinge as illustrated in the figure.At the instant shown, the force applied to the string is 5.0 N.What is the magnitude of the torque on the door? 
A)2.1 N . m 
B)3.0 N .m 
C)1.0 N . m 
D)0.78 N . m 
E)0.60 N . m

Quizplus · Accepted Answer

The Answer of A string is tied to a doorknob 0.72 m from the hinge as illustrated in the figure.At the instant shown, the force applied to the string is 5.0 N.What is the magnitude of the torque on the door? 
A)2.1 N . m 
B)3.0 N .m 
C)1.0 N . m 
D)0.78 N . m 
E)0.60 N . m

A String Is Tied to a Doorknob 0