239_Physics ProblemsTechnical Physics

239_Physics ProblemsTechnical Physics - Chapter 8 P8.61 (a)...

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Chapter 8 241 P8.61 (a) Initial compression of spring: 1 2 1 2 22 kx mv = 1 2 450 1 2 0500 120 0400 2 2 ±Nm ±kg ±ms m bg af b g x x = ∴= .. . (b) Speed of block at top of track: ∆∆ Ef x mech =− FIG. P8.61 mgh mv mgh mv f R v v v TT BB T T T + F H G I K J −+ F H G I K J +− = 1 2 1 2 980 200 1 2 1 2 700 100 0250 421 410 2 2 2 π ej a fa fa f . . . . . kg m s m kg kg m s N m ms 2 (c) Does block fall off at or before top of track? Block falls if ag c < a v R c T == = 2 2 16 8 . . . 2 Therefore c > and the block stays on the track . P8.62 Let λ represent the mass of each one meter of the chain and T represent the tension in the chain at the table edge. We imagine the edge to act like a frictionless and massless pulley. (a)
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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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