Unit VIII: Worksheet 3, Lecture notes of Physics

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Unit Vill: Worksheet 3 The National Academy of Science, in order to gather information on deforestation, wishes to place a 500. kg infrared-sensing satellite in a polar orbit around the earth. The radius of the earth is approximately 6.38 x 10° km, and the acceleration of gravity at the orbital altitude of 160 km is very nearly the same as it is at the surface of the earth. 1. Construct a force diagram for the satellite described in the statement above. jagsmut @ 2. What aa the centripetal force for the satellite? UE 3. How a work is done on the satellite during one complete orbit of the earth? Explain your "W=FD=F(a)= 0 4. Determine how long it would take for the satellite to make one complete revolution around the earth. F= mut. GMM, dev ve rz trdz v2 GMs {= amr ice t= 27 (6.59 A10'm) U7: Gm: = (6.67 x10°Nvi/hg?)( 6 x70" hy ) 7, 82x70? M/s iG G.S5¥ X08 Mm = 5,253s Urs 612 x jotm¥s? € = 87. G min pre 4. $2 x/0 M/s t Saf; Yt he. Mee ee ee ae 1 Unit VIII ws3_ v2.0