Two Objects, Each of Weight W, Hang Vertically by Spring

question 20

Multiple Choice

Two objects, each of weight W, hang vertically by spring scales as shown in the figure. The pulleys and the strings attached to the objects have negligible weight, and there is no appreciable friction in the pulleys. The reading in each scale is

• A) W.
• B) more than W, but not quite twice as much.
• C) less than W.
• D) 2W.
• E) more than 2W.

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Definitions:

Brain

The organ located in the skull that coordinates and controls activities of the nervous system such as movement, temperature, emotion, and thought processes.

Motor Pathway Neurons

are nerve cells that carry action potentials from the central nervous system towards muscles to cause movement.

Autonomic Nervous System

The segment of the nervous system that regulates involuntary body functions, including respiration, cardiac rhythm, and digestion.

Sensory Pathway Neurons

Nerve cells involved in the transmission of sensory information from the body's receptors to the brain.