A 20 Kg Mass Is Moving in a Circular Path with with a Radius

question 38

Multiple Choice

A 2.0 kg mass is moving in a circular path with a radius of 5.00 cm.The mass starts from rest and with constant angular acceleration,obtains an angular velocity of 6.00 rad/sec in 3.00 sec.The mass then comes to a stop with constant angular deceleration in 4.00 sec.The centripetal component of acceleration of the mass at 5.00 sec after the start is

• A) 2.50 m/s².
• B) 2.03 m/s².
• C) 1.25 m/s².
• D) 0.980 m/s².
• E) 0.456 m/s².

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Definitions:

REM Sleep

Rapid Eye Movement Sleep, a unique phase of sleep characterized by rapid movement of the eyes, increased brain activity, and vivid dreams.

Amplitude

The extent of a vibratory movement, measured from the position of equilibrium to the highest point of the wave, indicating the strength or intensity of a wave phenomenon.

Voluntary Muscle Activity

Muscle movements that are consciously controlled by the brain, typically involving the skeletal muscles.

NREM Sleep

Non-Rapid Eye Movement sleep, which is characterized by slower brain waves and is considered restorative sleep.