82. (a) Because it is moving in a circular orbit, F/mmust equal the centripetal acceleration:280 N.50 kgvr=Butv= 2πr/T, where T= 21600 s, so we are led to 2241.6m/srTπ=2which yields r= 1.9 ×107m. (b) From the above calculation, we infer v2= (1.6 m/s2)rwhich leads to
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.