238_Physics ProblemsTechnical Physics

238_Physics ProblemsTechnical Physics - 240 Potential...

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240 Potential Energy P8.58 (a) Fi i =− + + = d dx xxx xx 32 2 23 34 3 ej e j ±± (b) F = 0 when x 187 0535 .. and (c) The stable point is at x . point of minimum Ux af . The unstable point is at x = . maximum in a f . FIG. P8.58 P8.59 KU if += + 0 300 980 0200 1 2 250 0 200 1 2 50 0 20 0 9 80 0 200 40 0 2 2 ++ =+ ° . . . . s i n . kg m s m N m m kg kg m s m 2 2 bg v 58 8 5 00 25 0 25 2 124 2 . . . J J k g J ms + = v v FIG. P8.59 P8.60 (a) Between the second and the third picture, ∆∆ EK U mech −= + µ mgd mv kd i 1 2 1 2 22 1 2 50 0 0 250 1 00 9 80 1 2 100 0 245 2125 0378 2 . . . N m kg m s kg m s N 50.0 N m m bgb g dd d +− = = −± = (b) Between picture two and picture four, U mech = f d mv mv v i 2 1 2 1 2 2 245 2 0378 230
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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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