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

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Definitions:

Activity-Based Costing

A method of accounting that assigns costs to products or services based on the activities required to produce them, aimed at providing more accurate costs.

Overhead Cost

The ongoing expenses of operating a business that are not directly attributable to a specific product or service, including rent, utilities, and administrative expenses.

Product Costs

The total costs incurred to produce a product, including direct materials, direct labor, and manufacturing overhead.

Activity-Based Costing

A costing method that assigns costs to products or services based on the activities and resources that go into producing them.