287_Physics ProblemsTechnical Physics

287_Physics - Chapter 10 P10.8 1 f i = i t t 2 and f = i t are two equations in two unknowns i and 2 1 1 f i = f t t t 2 = f t t 2 2 2 2 rad 1 37.0

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Chapter 10 289 P10.8 θθω α fi i tt −= + 1 2 2 and ωω t =+ are two equations in two unknowns ω i and ωωα if t =− : θθ ωα f f t t t −= − + = − di 1 2 1 2 22 37 0 2 98 0 3 00 1 2 300 2 .. . . rev rad 1 rev rad s s s π F H G I K J afaf 232 294 4 50 rad rad s 2 . ej : == 61 5 13 7 . . rad 4.50 s rad s 2 2 P10.9 (a) θπ = = × t 12 727 10 5 rev 1 day rad 86 400 s rad s . (b) t ° × ° F H G I K J θ 107 2 257 10 5 4 . . rad s rad 360 s or 428 min *P10.10 The location of the dog is described by d rad s = 0750 . bg t . For the bone, b 2 rad rad s 1 3 2 1 2 0015 2 . t . We look for a solution to 075 2 3 00075 0 0 007 5 0 75 2 09 0 0 75 0 75 4 0 007 5 2 09 288 2 2 2 . . . t + = = ±− = s or 97.1 s The dog and bone will also pass if 2 3 20 0 0 7 5 2 + or if 2 3 0 0 7 5 2 + that is, if either the dog or the turntable gains a lap on the other. The first equation has t = 0 75 0 75 4 0 007 5 4 19 105 5 30 2 . . . . af s or s only one positive root representing a physical answer. The second equation has
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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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