Physics · Gravitation
A satellite of mass m is launched vertically upward with an initial speed u from the surface of the earth. After it reaches height R (R = radius of earth), it ejects a rocket of mass m/10 so that subsequently the satellite moves in a circular orbit. The kinetic energy of the rocket is (G = gravitational constant; M is the mass of earth):
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1m20 [u2 + 113200 GMR]
- 23m8 [u + √5GM6R]2
- 3m20 [u − √2GM3R]2
- 45 m [u2 − 119200 GMR]✓
Correct answer
5 m [u2 − 119200 GMR]
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