A Light Triangular Plate OAB Is in a Horizontal Plane

question 114

Multiple Choice

A light triangular plate OAB is in a horizontal plane.Three forces, and act on the plate,which is pivoted about a vertical axes through point O.In the figure, ₂ is perpendicular to OB.Consider the counterclockwise sense as positive.The sum of the torques about the vertical axis through point O,acting on the plate due to forces F₁,F₂,and F₃,is closest to

• A)4.1 N ∙ m.
• B)5.4 N ∙ m.
• C)-4.1 N ∙ m.
• D)-5.4 N ∙ m.
• E)zero.

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