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1. |
An artificial satellite revolves around the earth with a relative velocity of 800 m/s. If acceleration due to gravity is 9 m/s2 and gravitational force is 3600 N, then the mass of satellite is |
A. | 4000 kg |
B. | 400 N |
C. | 400 kg |
D. | 450 kg |
Answer» D. 450 kg | |