14_Dynamics 11ed Manual

14_Dynamics 11ed Manual - t = 0. Given: b 6 m s 2 = c 0.02...

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Engineering Mechanics - Dynamics Chapter 12 Given: b 6 m s 2 = c 0.02 1 s 2 = s p1 2000 m = Solution: a p bc s p + = v p d v p d s p = 0 v p v p v p d 0 s p s p bc s p + () d = v p 2 2 bs p c 2 s p 2 + = v p d s p d t = 2 bs p cs p 2 + = v p1 2 bs p1 cs p1 2 + = v p1 322.49 m s = t 0 s p s p 1 2 bs p cs p 2 + d = t 1 0 s p1 s p 1 2 bs p cs p 2 + d = t 1 19.274 s = Problem 12-23 The acceleration of a rocket traveling upward is given by a p = b + c s p . Determine the time needed for the rocket to reach an altitute s p1 . Initially, v p = 0 and s p = 0 when
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Unformatted text preview: t = 0. Given: b 6 m s 2 = c 0.02 1 s 2 = s p1 100 m = Solution: a p b cs p + = v p d v p d s p = v p v p v p d s p s p b cs p + ( ) d = v p 2 2 bs p c 2 s p 2 + = v p d s p d t = 2 bs p cs p 2 + = v p1 2 bs p1 cs p1 2 + = v p1 37.417 m s = 12...
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