A CD with a Diameter of 12

question 29

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 acceleration. What is the radial acceleration of a point 4.0 cm from the center at the time 25.0 seconds from the start?

• A) 0.47 m/s²
• B) 0.40 m/s²
• C) 0.34 m/s²
• D) 0.24 m/s²
• E) 0.20 m/s²

---

Definitions:

Medicare

A federal health insurance program in the United States for people aged 65 and older, as well as for some younger people with disabilities.

Social Security System

A government program that provides financial assistance to people with insufficient or no income, typically covering the elderly, disabled, and unemployed.

Unemployment Compensation

A state government transfer program that pays cash benefits for a certain period of time to laid-off workers who have worked for a specified period of time for a covered employer.

Assistance Program

A governmental or organizational initiative designed to provide support, financial or otherwise, to individuals or groups in need.