A cosmonaut is circling the earth in a satellite at 7 km/s at a height of 630 km above the surface of earth. Calculate the centripetal force acting on the cosmonaut if his mass is 80 kg (Take RE = 6.37×10^6 m)

Question:

A cosmonaut is circling the earth in a satellite at 7 km/s at a height of 630 km above the surface of earth. Calculate the centripetal force acting on the cosmonaut if his mass is 80 kg (Take RE = 6.37×10⁶ m)

Options :

(a) zero
(b) 560 N
(c) 600 N
(d) 650 N

Answer :

(b) 560 N

Answer Steps :

step 1

step 2

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