A 5-Kg Block Is Attached to a Pulley by a Light

question 62

Multiple Choice

A 5-kg block is attached to a pulley by a light rope. The rope is wound around the pulley, and when the block is released, the rope unspools without slipping. The pulley is a solid disk of radius 0.2 m and mass 2 kg. What is the approximate angular speed of the pulley when the block has fallen 1 meter?

• A) 0.7 rad/s
• B) 7.0 rad/s
• C) 15.7 rad/s
• D) 22.2 rad/s
• E) The answer cannot be determined without knowing the final speed of the block.

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Definitions:

Classical Conditioning

A training approach characterized by making associations between a stimulus in the environment and one that occurs naturally, causing a conditioned behavior.

Social Setting

The physical and social context in which people live or in which something happens or develops.

Negative Punishment

A behavior modification technique involving the removal of a desirable stimulus following an undesired behavior to decrease the likelihood of the behavior’s occurrence.

Positive Punishment

Adding an unpleasant stimulus to decrease a behavior, part of operant conditioning in psychology.