Print by WENTRELL MCQUEEN PH201 Seci01-spr2017-HW11 Spring 2017 \"Chapter 11, Pr

Question

Print by WENTRELL MCQUEEN PH201 Seci01-spr2017-HW11 Spring 2017 "Chapter 11, Problem 047 A track is mounted on a large wheel that is free to turn with negligible friction about a vertical axis (the figure). A toy train of mass m is placed on track and, with the system initially at rest, the train's electrical power is turned on. The train reaches a steady speed of m/s with respect to the track, what is the angular speed of the wheel mass is and its radius bs o 446 m? Treat the wheel as a hoop, and neglect the mass of the spokes and hub.) Units Question Attempts: o of 5 used rights reserved Coryngt 02000 2017 by John Waer Inc. wated companies.

Explanation / Answer

by conversation of angular momentum

m1v1r = m2v2r

v2 = m*0.188/1.61m = 0.117 m/s

angular speed = v2/r = 0.117/0.446

= 0.262 rad/s

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