A CD with a Diameter of 12

question 27

Multiple Choice

A CD with a diameter of 12.0 cm starts from rest and with a constant angular acceleration of 1.0 rad/sec² acquires an angular velocity of 5.0 rad/sec.The CD continues rotating at 5.0 rad/sec for 15.0 seconds and then slows to a stop in 12.0 second with a constant angular deceleration.What is the centripetal acceleration of a point 4.0 cm from the center at the time 15.0 seconds from the start?

• A) 0.5 m/s²
• B) 1.0 m/s²
• C) 1.8 m/s²
• D) 2.0 m/s²
• E) 2.6 m/s²

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Definitions:

Four Side Rails

A safety feature used on hospital beds involving rails on all four sides to prevent the patient from accidentally falling out of bed.

Falls

Accidental descents to the ground, which can cause injury, especially significant in older adults due to higher vulnerability.

Side Rails Down

The lowering of protective rails on a hospital bed to facilitate patient transfer or make the bed more accessible.

Continuous Seizure Activity

Prolonged seizure episodes without recovery between them, also known as status epilepticus.