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102_Physics ProblemsTechnical Physics

102_Physics ProblemsTechnical Physics - Chapter 4 P4.52(a...

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Chapter 4 103 P4.52 (a) The moon’s gravitational acceleration is the probe’s centripetal acceleration: (For the moon’s radius, see end papers of text.) a v r v v = = × = × = 2 2 6 6 1 6 9 80 1 74 10 2 84 10 1 69 . . . . m s m m s km s 2 2 2 e j (b) v r T = 2 π T r v = = × × = × = 2 2 1 74 10 6 47 10 1 80 6 3 π π ( . . . m) 1.69 10 m s s h 3 P4.53 (a) a v r c = = = 2 2 5 00 1 00 25 0 . . . m s m m s 2 b g a g t = = 9 80 . m s 2 (b) See figure to the right. (c) a a a c t = + = + = 2 2 2 2 25 0 9 80 26 8 . . . m s m s m s 2 2 2 e j e j φ = F H G I K J = = ° tan tan . . . 1 1 9 80 25 0 21 4 a a t c m s m s 2 2 FIG. P4.53 P4.54 x v t v t f ix i = =
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