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This site will look much better in a browser that supports current web standards , but it is accessible to any browser or Internet device. Physics 1D03, set #12 Main menu · Reload · Logout Current server time is Wednesday, December 20, 2006 at 05:12 Help Units · Metric Prefixes · Constants floresn Set 12, Due Mon, Dec 4, 2006 at 13:00 Go to problem [1 ] [2 ] [3 ] [4 ] [5 ] [6 ] [7 ] [8 ] [9 ] 1-9 Status: Y Y Y Y Y Y Y Y Y 1. 1 . [1 point, 10 tries] A playground merry-go-round of radius R = 2.03 m has a moment of inertia of I = 225 kg·m 2 and is rotating at 13.0 rev/min about a frictionless vertical axle. Facing the axle, a 20.9 kg child hops onto the merry-go-round and manages to sit down on its edge. What is the new angular speed (in revolutions per minute) of the merry-go-round? Do not enter units. Answer: 9.40E+00 2. 2 . [1 point, 10 tries] How much work was done by the child? Answer: -5.77E+01 J 3. 3

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## This note was uploaded on 12/03/2009 for the course PHYSIC 1D03 taught by Professor Dr.reid during the Spring '09 term at McMaster University.

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