A research satellite of mass 200 kg circles the earth in an orbit of average radius 3R/2 where R is the radius of the earth. Assuming the gravitational pull on a mass of 1 kg on the earth’s surface to be 10 N, the pull on the satellite will be (nearly)

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880 N

889 N

890 N

892 N

answer is A.

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Detailed Solution

g′=gRR+h2=gR3R/22=49g∴W′=49×mg=4×200×9.89=880N

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