A remote-sensing satellite of earth revolves in a circular orbit at a height of 0.25×10^6 m above the surface of earth. If earth's radius is 6.38×10^6 m and g=9.8ms^-2, then the orbital speed of the satellite is

Question:

A remote-sensing satellite of earth revolves in a circular orbit at a height of 0.25×10⁶ m above the surface of earth. If earth’s radius is 6.38×10⁶m and g=9.8ms^-2, then the orbital speed of the satellite is

Options :

(a) 5.86 kms^-1
(b) 9.13 kms^-1
(c) 6.67 kms^-1
(d) 7.76 kms^-1

Answer :

(d) 7.76 kms^-1

Answer Steps :

step 1

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