An Old 78 Rpm Record Rotates Through an Angle $320 ^ { \circ }$

question 88

Multiple Choice

An old 78 rpm record rotates through an angle of $320 ^ { \circ }$ as it slows down uniformly from 78.0 rpm to 22.8 rpm. What is the magnitude of the angular acceleration of the record?

• A) \(5.46 \mathrm { rad } / \mathrm { s } ^ { 2 }\)
• B) \(2.34 \mathrm { rad } / \mathrm { s } ^ { 2 }\)
• C) \(10.9 \mathrm { rad } / \mathrm { s } 2\)
• D) \(8.35 \mathrm { rad } / \mathrm { s } ^ { 2 }\)
• E) \(6.50 \mathrm { rad } / \mathrm { s } ^ { 2 }\)

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Definitions:

Cash Flow Amounts

The net amount of cash and cash-equivalents being transferred into and out of a business.