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Part (d) Calculate the magnitude of the angular acceleration of the turntable (in radians/second2) while increasing to 120 RPM (Case 2). Numeric : Anumeric value is expected and not an expression. a2 = Part (e) How long (in seconds) does it take for the turntable to go from fj = 78 to f2 = 120 RPM? Numeric A numeric value is expected and not an expression. t2 =

Part (d) Calculate the magnitude of the angular acceleration of the turntable (in radians/second2) while increasing to 120 RPM (Case 2). Numeric : Anumeric value is expected and not an expression. a2 = Part (e) How long (in seconds) does it take for the turntable to go from fj = 78 to f2 = 120 RPM? Numeric A numeric value is expected and not an expression. t2 =

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Please answer question 3 parts d and e. The previous parts are answered and everything needed to answer parts d and e are there. The question is not incomplete.

Problem 3: Case 1: A DJ starts up her phonograph player. The turntable accelerates uniformly from rest, and takes t1 = 10.5 seconds to get up to its full speed of fj = 78 revolutions per minute. Case 2: The DJ then changes the speed of the turntable from fj = 78 to f2 = 120 revolutions per minute. She notices that the turntable rotates exactly n2= 17 times while accelerating uniformly. Randomized Variables t1 = 10.5 seconds n2 = 17 times Part (a) Calculate the angular speed described in Case 1, given as fj = 78 revolutions per minute, into units of radians/second. Numeric : A numeric value is expected and not an expression. 01= 8.168 Part (b) How many revolutions does the turntable make while accelerating in Case 1? Numeric : A numeric value is expected and not an expression. 6.89 Part (c) Calculate the magnitude of the angular acceleration of the turntable in Case 1, in radians/second2. Numeric : A numeric value is expected and not an expression. a = 0.77 Part (d) Calculate the magnitude of the angular acceleration of the turntable (in radians/second-) while increasing to 120 RPM (Case 2). Numeric : A numeric value is expected and not an expression. a2 = Part (e) How long (in seconds) does it take for the turntable to go from fj = 78 to f2 = 120 RPM? Numeric : A numeric value is expected and not an expression. t2
Transcribed Image Text:Problem 3: Case 1: A DJ starts up her phonograph player. The turntable accelerates uniformly from rest, and takes t1 = 10.5 seconds to get up to its full speed of fj = 78 revolutions per minute. Case 2: The DJ then changes the speed of the turntable from fj = 78 to f2 = 120 revolutions per minute. She notices that the turntable rotates exactly n2= 17 times while accelerating uniformly. Randomized Variables t1 = 10.5 seconds n2 = 17 times Part (a) Calculate the angular speed described in Case 1, given as fj = 78 revolutions per minute, into units of radians/second. Numeric : A numeric value is expected and not an expression. 01= 8.168 Part (b) How many revolutions does the turntable make while accelerating in Case 1? Numeric : A numeric value is expected and not an expression. 6.89 Part (c) Calculate the magnitude of the angular acceleration of the turntable in Case 1, in radians/second2. Numeric : A numeric value is expected and not an expression. a = 0.77 Part (d) Calculate the magnitude of the angular acceleration of the turntable (in radians/second-) while increasing to 120 RPM (Case 2). Numeric : A numeric value is expected and not an expression. a2 = Part (e) How long (in seconds) does it take for the turntable to go from fj = 78 to f2 = 120 RPM? Numeric : A numeric value is expected and not an expression. t2
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