The constant 180 N-mcounterclockwise couple acts on the L-shaped rod ABC, whichrotates freely in the vertical plane about the pin at A. At thismoment, the angular velocity of the rod is 2 rad/scounterclockwise. Determine the angular acceleration of the rodand the reactions at A in the position shown.Answer: a=1.7 rad/s², Ax = 25.3 N, Ay = 603 N180 N-m1.2 m24 kg20 kgB1.0 m

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Answered: The constant 180 N-m counterclockwise…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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The telephone-cable reel rolls without slipping on the horizontal surface. If point A on the cable has a velocity VA = 0.70 m/s to the right, compute the velocity of the center O (positive if to the right, negative if to the left) and the angular velocity w (positive if counterclockwise, negative if clockwise) of the reel. 1.72 m A Answers: Vo = W= 0.60 m 1.075 i 1.25 m/s rad/s
The telephone-cable reel rolls without slipping on the horizontal surface. If point A on the cable has a velocity VÀ = 0.84 m/s to the right, compute the velocity of the center O (positive if to the right, negative if to the left) and the angular velocity w (positive if counterclockwise, negative if clockwise) of the reel. Answers: Vo = W = 1.91 m 4 0.69 m 1.315 i 1.376 Ho m/s VA rad/s
The 110-kg wheel has a radius of gyration about its center O of ko = 220 mm, and radius r = 0.4 m. When the wheel is subjected to the constant couple moment M = 63 N•m, it starts rolling from rest. Determine the wheel's angular velocity W (in rad/s) after 6.0 seconds if the wheel has been rolling without slipping. 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/s². T M Your Answer: Answer
The 1.8-kg uniform bar rotates in the vertical plane about the pin at O.When the bar is in the position shown, its angular velocity is 4 rad/s, clockwise. For this position, find (a) the angular acceleration of the bar; and (b) the magnitude of the pin reaction at O.
The uniform 2-kg slender bar AB is mounted on a vertical shaft at C.A constant couple of 9 N-m is applied to the bar. Calculate the angular acceleration of the bar and the magnitude of the horizontal reaction at C at the instant when the angular velocity of the bar is 6 rad/s.
A gear of mass m = 10 kg and radius R=0.25 m may rotate about its center of mass C, which is fixed. A rack of mass m = 10 kg is subjected to a constant force Fo = 20 N, as shown. The rack and gear are geared together (gear teeth not shown), so that the force Fo drives the rack to the right and rotates the gear. Find the angular ácceleration a of the gear and find the force f exerted by the rack on the gear. The gear is to be modeled as a uniform circular disc. Fixed Fo3 20 N Rack
Dynamics
the crank AB is made to rotate with a constant angular velocity of Q rpm clockwise with no force applied to the face of the piston. (a) determine the velocity of the position P (b) determine the angular velocity and acceleration of the connecting rod BD (c) if the piston mass is m, determine the forces exerted on the connecting rod at B and D (neglect the effect of the weight of the rod)
At the instant shown, the uniform slender rod with mass m = 32 kg is pin-supported at point O. It is subjected to a counterclockwise moment M = 65 N•m, has a counterclockwise angular velocity of W= 5.8 rad/s, and the dimensions a = 0.23 m and b = 0.69 m. Determine angular acceleration of the rod (in rad/s²) at this instant. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point. Negative sign must be included if the angular acceleration is clockwise. Take g = 9.81 m/s². a Your Answer: Answer M b
The circular concrete culvert rolls with an angular velocity of w=0.58 rad/s when the man is at the position shown. At this instant the center of gravity of the culvert and the man is located at point G, and the radius of gyration about G is kg = 3.2 ft. (Figure 1) Figure @ 4 ft 0.5 ft 1 of 1 Part A Determine the angular acceleration of the culvert. The combined weight of the culvert and the man is 500 lb. Assume that the culvert rolls without slipping, and the man does not move within the culvert. Express your answer to three significant figures and include the appropriate units. α= Submit μA Value Provide Feedback Request Answer Units ***** ? Next >
In the mechanism shown below, the wheel is pinned at the center. The radius from O to C is 0.2 m and link CB is 0.55 m long. CB makes an initial angle of 25° with the horizontal as shown. The hydraulic ram at B is moving left at 7 m/s. At the moment shown, what is the angular velocity of link BC and the wheel pivoted at 0? 0000 Ninbet tatis rad/s

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