Equilibrium: the Figure Shows Two Forces, Each of Magnitude 4

question 7

Multiple Choice

Equilibrium: The figure shows two forces, each of magnitude 4.6 N, acting on an object. The angle between these forces is 40°, and they make equal angles above and below the horizontal. What third force will cause the object to be in equilibrium (acceleration equals zero) ?

• A) 8.6 N pointing to the right
• B) 7.0 N pointing to the right
• C) 4.3 N pointing to the right
• D) 3.5 N pointing to the right

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Definitions:

Insects

A class of arthropods characterized by three main body parts (head, thorax, abdomen), compound eyes, two antennae, and six legs.

Land Invertebrate

An animal without a backbone that lives on land, such as insects, spiders, and worms.

Bilateral Symmetry

A body plan in which a central longitudinal plane divides the body into two equal but opposite halves.

Barnacles

Marine crustaceans with hard protective shells, known to attach permanently to surfaces like rocks and ships' hulls.