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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The Answer of 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.

A Light Triangular Plate OAB Is in a Horizontal Plane