A horizontal, 2.00 m long, 3.00 kg uniform beam that lies along the east-west direction is acted on by two forces. At the east end of the beam, a 200 N force pushes downward. At the west end of the beam, a 200 N force pushed upward. What is the torque about the center of mass of the beam?
A) 800 N∙m north
B) zero
C) 400 N∙m north
D) 800 N∙m south
E) 400 N∙m south

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The Answer of A horizontal, 2.00 m long, 3.00 kg uniform beam that lies along the east-west direction is acted on by two forces. At the east end of the beam, a 200 N force pushes downward. At the west end of the beam, a 200 N force pushed upward. What is the torque about the center of mass of the beam?
A) 800 N∙m north
B) zero
C) 400 N∙m north
D) 800 N∙m south
E) 400 N∙m south

A Horizontal, 2