302 Rotation of a Rigid Object About a Fixed AxisP10.45(a)For the counterweight,Fmayy∑=becomes:50 050 0980...−=FHGIKJTaFor the reel τα∑=IreadsTRIIaR==αwhereIMR⋅12009382. kgm2We substitute to eliminate the acceleration:50 05 102..FHGIKJTTRIT=11 4. Nanda=−=50 0 11 4510757.. ms2vvaxxfi222=+−di:vf2 7 57 6 009 53.afmsFIG. P10.45(b)Use conservation of energy for the system of the object, the reel, and the Earth:KUif+=+af:mghmvI1212ω22250060095322222025022mgh mvIvRvmIRvmghmIRFHGIKJFHGIKJ=+=+=....N mkgP10.46Choose the zero gravitational potential energy at the level where the masses pass.KU KU EmvImghvRvRfgfigiii++=+++LNMOQPFHGIKJ−=⇒
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .