HW9-solutions - Agha (sa9896) HW9 bohm (59970) This...

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Agha (sa9896) – HW9 – bohm – (59970) 1 This print-out should have 8 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 (part 1 oF 4) 5.0 points A disk 9 . 5 cm in radius rotates at a constant rate oF 595 rev / min about its central axis. Determine its angular speed in radians per second. Correct answer: 62 . 3083 rad / s. Explanation: Let : ω = 595 rev / min . ω = (595 rev / min) 2 π rad rev 1 min 60 s = 62 . 3083 rad / s . 002 (part 2 oF 4) 5.0 points Determine the linear speed at a point 2 . 52 cm From its center. Correct answer: 1 . 57017 m / s. Explanation: Let : r = 2 . 52 cm = 0 . 0252 m . v = r ω = (0 . 0252 m) (62 . 3083 rad / s) = 1 . 57017 m / s . 003 (part 3 oF 4) 5.0 points Determine the radial acceleration oF a point on the rim. Correct answer: 97 . 8344 m / s 2 . Explanation: a r = r ω 2 = (0 . 0252 m) (62 . 3083 rad / s) 2 = 97 . 8344 m / s 2 .
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HW9-solutions - Agha (sa9896) HW9 bohm (59970) This...

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