A Puck on a Frictionless Air Hockey Table Has a Mass

question 35

Multiple Choice

A puck on a frictionless air hockey table has a mass of 5.0 g and is attached to a cord passing through a hole in the surface as in the figure.The puck is revolving at a distance 2.0 m from the hole with an angular velocity of 3.0 rad/s.The cord is then pulled from below,shortening the radius to 1.0 m.The new angular velocity (in rad/s) is

• A)4.0
• B)6.0
• C)12
• D)2.0
• E)8.0

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Definitions:

Glands

Organs in the body that secrete hormones or other substances directly into the blood or onto a surface within or out of the body.

Sensory Neurons

Nerve cells that transmit sensory information (sight, sound, touch, etc.) to the central nervous system.

Motor Neurons

Nerve cells forming part of the pathway along which impulses pass from the brain or spinal cord to a muscle or gland, facilitating movement and action.

Synaptic Neurons

Neurons that are capable of transmitting a nerve impulse across a synapse to a postsynaptic element, such as another nerve, muscle, or gland.