235_Dynamics 11ed Manual

235_Dynamics 11ed Manual - Engineering Mechanics - Dynamics...

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Engineering Mechanics - Dynamics Chapter 13 r A r 0 e 1 + () 1 e = r A 33.7 Mm = v A v 0 r 0 r A = v A 11.5 Mm hr = dr A R e = d 27.3 Mm = Problem 13-117 A communications satellite is to be placed into an equatorial circular orbit around the earth so that it always remains directly over a point on the earth’s surface. If this requires the period T (approximately), determine the radius of the orbit and the satellite’s velocity. Units Used: Mm 10 3 km = Given: T 24 hr = G 66.73 10 12 × m 3 kg s 2 = M e 5.976 10 24 kg × = Solution: GM e M s r 2 M s v 2 r = e r 2 π
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