A Horizontal Disk with a Radius of 10 Cm Rotates

question 56

Multiple Choice

A horizontal disk with a radius of 10 cm rotates about a vertical axis through its center. The disk starts from rest at t = 0 and has a constant angular acceleration of 2.1 rad/s². At what value of t will the radial and tangential components of the linear acceleration of a point on the rim of the disk be equal in magnitude?

• A) 0.55 s
• B) 0.63 s
• C) 0.69 s
• D) 0.59 s
• E) 0.47 s

Understand the implications of the law of increasing cost and factor suitability in resource allocation.

Recognize the role of the consumer in the American economy.

Understand the concepts of efficiency and maximum possible output in an economy.

Learn about the shift of resources between types of goods to achieve economic growth.

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