225_Physics ProblemsTechnical Physics

225_Physics ProblemsTechnical Physics - Chapter 8 P8.23 z...

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Chapter 8 227 P8.23 (a) Wd x y x y d x OA =⋅ + = zz ±±± .. iij 22 2 0 500 0 ej m m and since along this path, y = 0 W OA = 0 y y xx d y AC + = ji j 2 2 0 2 0 m For x = . m , W AC = 125 J and W OAC =+ = 01 2 5 1 2 5 J (b) y y x x d y OB + = 2 2 0 2 0 m since along this path, x = 0, W OB = 0 x y x y d x BC + = 2 0 0 m since y = m , W BC = 50 0 J W OBC = 05 0 0 5 0 0 J (c) x d y y x y d x x d y OC + = + ±± ij e j e j Since xy = along OC , Wx x d x OC = z 26 6 7 2 0 . . m J (d) F is nonconservative since the work done is path dependent. P8.24 (a) ∆∆ KW W m g h m g AB g af a f == = = 500 320 1 2 1 2 980 180 594 mv mv m v BA B −= = . ms Similarly, vvg CA = 2 2 5 00 2 00 7 67 . (b) Wm g g AC
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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 .

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