236_Dynamics 11ed Manual

236_Dynamics 11ed Manual - A to B The planet has no...

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Engineering Mechanics - Dynamics Chapter 13 b 10000 mi = c 0.6 = r 2000 mi = G 34.4 10 9 × lbf ft 2 slug 2 = M e 409 10 21 slug × = Solution: r 0 a = OA' b = M p M e c = OA' r 0 2 GM p r 0 v 0 2 1 = v 0 2 GM p r 0 r 0 OA' 1 + = v 0 23.9 10 3 × ft s = Problem 13-119 The rocket is traveling in free flight along an elliptical trajectory A'A . If the rocket is to land on the surface of the planet, determine the required free-flight speed it must have at A' so that the landing occurs at B . How long does it take for the rocket to land, in going from
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Unformatted text preview: A' to B ? The planet has no atmosphere, and its mass is 0.6 times that of the earth’s. Units Used: Mm 10 3 km = Given: a 4000 mi = r 2000 mi = b 10000 mi = M e 409 10 21 slug × = c 0.6 = G 34.4 10 9 − × lbf ft 2 ⋅ slug 2 = Solution: M p M e c = OA' b = OB r = OA' OB 2 GM p OB v 2 ⎛ ⎜ ⎝ ⎞ ⎟ ⎠ 1 − = 234...
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This note was uploaded on 08/16/2011 for the course EGN 3321 taught by Professor Christianfeldt during the Spring '08 term at University of Central Florida.

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