The man at B exerts a force of 140N on the rope attached to the end of beam AC as shown. Determine the moment of this force about the base of the beam at A.

The man at B exerts a force of 140N on the rope attached to the end o

1.	The man at B exerts a force of 140N on the rope attached to the end of beam AC as shown. Determine the moment of this force about the base of the beam at A.
A.	MA = (720i-360k) N-m
B.	MA = (-720i+360k) N-m
C.	MA = (-720i-360k) N-m
D.	MA = (720i+360k) N-m
Answer» D. MA = (720i+360k) N-m

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The man at B exerts a force of 140N on the rope attached to the end of beam AC as shown. Determine the moment of this force about the base of the beam at A.

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