Fundamentals of Physics Extended (10th Edition)

Published by Wiley
ISBN 10: 1-11823-072-8
ISBN 13: 978-1-11823-072-5

Chapter 10 - Rotation - Problems - Page 291: 63

Answer

$v = 5.42~m/s$

Work Step by Step

Note that the initial height of the center of mass is $0.500~m$ We can use conservation of energy to find the angular speed just before hitting the floor: $U_0 = K_f$ $mg~h = \frac{1}{2}I~\omega^2$ $mg~h = (\frac{1}{2})(\frac{1}{3}mL^2)~\omega^2$ $\omega^2 = \frac{6~g~h}{L^2}$ $\omega = \frac{\sqrt{6~g~h}}{L}$ $\omega = \frac{\sqrt{(6)~(9.80~m/s^2)~(0.500~m)}}{1.00~m}$ $\omega = 5.42~rad/s$ We can find the speed of the other end of the meter stick: $v = \omega~r$ $v = (5.42~rad/s)(1.00~m)$ $v = 5.42~m/s$
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