Use the Parallelogram Rule to Find the Magnitude of the Resultant

question 258

Multiple Choice

Use the parallelogram rule to find the magnitude of the resultant force for the two forces shown in the figure. Round to
one decimal place.
-What is the minimum force required to prevent a ball weighing $20.7 \mathrm { lb }$ from rolling down a ramp inclined $12.2 ^ { \circ }$ with the horizontal?

• A) \(4.4 \mathrm { lb }\)
• B) \(10.1 \mathrm { lb }\)
• C) \(2.2 \mathrm { lb }\)
• D) \(20.2 \mathrm { lb }\)

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Definitions:

Basal Ganglia

A group of structures linked to the thalamus in the base of the brain and involved in coordination of movement.

Forebrain

The anterior part of the brain, including the cerebral hemispheres, thalamus, and hypothalamus, involved in complex functions.

Afferent

Relating to or denoting nerve fibers that carry sensory information toward the central nervous system.

Efferent

Referring to nerve fibers that carry signals away from the central nervous system to the peripheral effectors, such as muscles or glands.