R18-3. The drum has a mass of 50 kg and a radius ofgyration about the pin at O of ko = 0.23 m. Starting fromrest, the suspended 15-kg block B is allowed to fall 3 mwithout applying the brake ACD. Determine the speed ofthe block at this instant. If the coefficient of kinetic frictionat the brake pad C is µz = 0.5, determine the force P thatmust be applied at the brake handle which will then stop theblock after it descends another 3m. Neglect the thickness ofthe handle.-P0.75 m0.25 m0.15 m0.5 m

Given: the mass of drum = 50 kg The mass of block B = 15 kg The coefficient of kinetic friction =…

Answered: R18-3. The drum has a mass of 50 kg and…

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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y - y = 4.5 – x h ft k lb/ft B I ft The 8-lb collar has a speed of 9 ft. s at A. The attached spring has an unstretched length of 2 ft and a stiffness of k = 15lb. ft-1. If the collar moves over the smooth rod, determine its speed when it reaches point B. The height of A is h = 6 ft and B is at l = 4ft from the vertical of A www
The flat circular disk rotates about a vertical axis through O with a slowly increasing angular velocity w. Prior to rotation, each of the 0.52-kg sliding blocks has the position x = 28 mm with no force in its attached spring. Each spring has a stiffness of 430 N/m. Determine the value of x for each spring for a steady speed of 279 rev/min. Also calculate the normal force N exerted by the side of the slot on the block. The force N is positive if it pushes from the side labeled A. Neglect any friction between the blocks and the slots, and neglect the mass of the springs. (Hint: Sum forces along and normal to the slot.) Answers: X = wwwwwwww N = i i -74-74- mm mm mm N
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The system is made up of the 1-m, 6.5-kg uniform rod AB and the two uniform disks (each of 0.19 m radius and 1.5 kg mass). If the system is released from rest when = 80°, when rod AB has just become horizontal, determine the coefficient C in the expression Cw² which is the kinetic energy of rod AB at this instant. Assume the disks roll without slipping. Your answer must include 2 places after the decimal point. Please pay attention: the numbers may change since they are randomized. AB' Take g= 9.81 m/s². A-L B m Your Answer: Answer
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2. The 150-1b man lies against the cushion for which the coefficient of static friction is µ̟ = 0.5. If he rotates about the z axis with a constant speed of v = smallest angle 0 of the cushion at which he will begin to slip off. 30 ft/s, determine the -8 ft Figure: 13 PO63-064

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