Torque: a Light Triangular Plate OAB Is in a Horizontal

question 48

Multiple Choice

Torque: 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

---

Definitions:

Desert-Living Animals

Animals that have adapted to survive in desert environments, characterized by extreme temperatures and scarce water.

Uric Acid

A waste product formed from the breakdown of purines, excreted in urine, high levels of which can lead to gout and kidney stones.

Protonephridia

Protonephridia are excretory structures found in some invertebrates, such as flatworms, consisting of a network of dead-end tubules connected to external openings.

Flatworm

A group of simple, soft-bodied invertebrates that belong to the phylum Platyhelminthes, characterized by their flattened bodies and lack of specialized respiratory and circulatory systems.