A Turntable Has a Radius of 0

question 47

Multiple Choice

A turntable has a radius of 0.80 m and a moment of inertia of 2.0 kg · m².The turntable is rotating with an angular velocity of 1.5 rad/s about a vertical axis though its center on frictionless bearings.A very small 0.40-kg ball is projected horizontally toward the turntable axis with a velocity of 3.0 m/s.The ball is caught by a very small and very light cup-shaped mechanism on the rim of the turntable (see figure) .The percent of the initial kinetic energy of the system that is lost during the capture of the ball is closest to

• A)45%.
• B)51%.
• C)55%.
• D)60%.
• E)65%.

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Definitions:

Behavioral Observations

The method of studying subjects' actions in their natural settings without intervention.

Internal Processes

Internal processes involve the cognitive, psychological, and physiological operations that underlie an individual's mental and emotional functioning.

Behaviorists

Behaviorists focus on observable behaviors and the ways they're learned, downplaying the role of internal thoughts and feelings.

Gestalt Psychologists

Psychologists who believe that human perception and behavior should be understood as organized wholes, rather than the sum of their parts.