Question

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A 400 kg Satellite is a circular orbit of radius 2RE about the Earth. How much energy is required to transfer it to a circular orbit of radius 4RE ?
What are the Changes in the Kinetic and potential energy....​

Answer 1

Explanation:

M1=6×10^24 kg

M2=400 kg

Re=6.4×10^6 m

G=6.67×10^-4 Nm^2/ kg

GM1 M2 = 6.67×10^11×6×10^24×400

2(2Re 2×12.8×10^6

= 6.25=10^9 J

K.E= 6.25×10^9 J

P.E= -2 K.E = -12.5×10^9 J

T.E = P.E+ K.E

= 6.25×10^9 J

Hope it helps you my friend.......