Question

Problem 18.6 - Enhanced with Hints and Feedback Rovira A foron of P-20N is applied to the cable, which causes the 105-kgroel to turn without sipping on the two rollers A and of the dispenser Neglect the mass of the cable. Each roller can be considered as an 13-cylinder, having a radius of 0.1 m. The radius of gration of the reel about its contradisi ka -0.42 m. (Figure 1) Part A Figure Determine the angaarvelocity of the real measured counterclockwise after has made two revolutions starting from Express your answer in radians per second to three significant figures. Enter positive value of the angular velocity is counterclockwise and negative value if the angular velocity is clockwise View Available Hits) No Avec OG Submit А о Provide Feedback 1/10/2020

Answer 1

Solution -> Kinetic diagram : - KP 30' promm soom NN NB from kinetic energy equation :- Tea [ 1 IG WG] + [ 1 / IA WA T2 = ( (185) (0,42%win] + [ (18)(0.13%w) [Raller A A & B posses same kinetic energy so only one kinetic energy should be considered]. & Velouty of roller Velocity of reel Лn Xa) от VAX WA (because rell is moving without slips 0.5 xwer = 0.1 X WA یا لباک - WA f [ (18) (0.13? (sway?] Te = [” (185) (0.42)2 wa] T2 = 18.567 in energy principle :- = 0 + Frome work and Ty + EU-2 = Tz MO 18,567 war PX (0.28 (4) = 18,567 wir 20 x 0.2 stur 18.567 wit wo = 1.8395 rad

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