*19-12. The 40-kg roll of paper rests along the wall wherethe coefficient of kinetic friction is µz = 0.2. If a verticalforce of P = 40 N is applied to the paper, determine theangular velocity of the roll when 1 = 6 s starting from rest.Neglect the mass of the unraveled paper and take the radiusof gyration of the spool about the axle O to be ko = 80 mm.P= 40 N1312PO120 mm

Write the given data with suitable variables: m=40 kgμk=0.2P=40 Nt=6 sko=80 mm=0.08 m1000 mm1 mr=120…

Answered: *19-12. The 40-kg roll of paper rests…

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 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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SOLVE USING PRINCIPLE OF WORK AND ENERGY
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