19–15. A 4-kg disk A is mounted on arm BC, which has anegligible mass. If a torque of M = (5e05") N-m, where t isin seconds, is applied to the arm at C, determine the angularvelocity of BC in 2 s starting from rest. Solve the problemassuming that (a) the disk is set in a smooth bearing at B sothat it moves with curvilinear translation, (b) the disk isfixed to the shaft BC, and (c) the disk is given an initialfreely spinning angular velocity of w, = {-80k} rad/s priorto application of the torque.250 mm60 mmM = (5e5) N - m

Given: M = 5e0.5t Nm Required : The angular velocity of BC in 2s starting from rest assuming: The…

Answered: 19–15. A 4-kg disk A is mounted on arm…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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The pendulum has a mass of 7.2 kg, a centre of gravity at G, and a radius of gyration of 0.31 m about the fixed pin support at O. The pendulum is released from rest in the position where 0 = 43 •. What is the magnitude of the pendulum's angular acceleration (in rad/s?) at this instant? Take = OG = 0.24 m. The motion occurs in a vertical plane and friction is negligible. f = OG G
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The 16-kg wheel is rolling under the constant moment of M = 60 N-m. The wheel has radius r= 0.50 m, has mass center at point G, and the radius of gyration is kg = 0.23 m. The coefficients of friction between the wheel and the ground is ls = 0.28 and Uk = 0.14. If the wheel rolls without slipping, determine the angular acceleration of the wheel (in rad/s?). Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point. Take g = 9.81 m/s?. M
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stion 5 The 20-kg wheel has a radius of gyration ko = 400 mm where O is the center of the wheel. If the wheel is subjected to a moment, M = (2t) N.m, where t is in seconds, determine its angular velocity when t- 4s starting from rest. Assume the wheel is subjected to rotation only (no translation). OA 16.0 rad/s B. 10.0 rads oc 8.0 rad/s 0 5.0 rad/s
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