Physics · The universal law of gravitation
Suppose gravity of earth suddenly becomes zero, then in which direction will the
Suppose gravity of earth suddenly becomes zero, then in which direction will the moon begin to move if no other celestial body affects it?
- A. Radial
- B. Tangential
- C. cant say
- D. None
Step-by-step solution
The moon orbits Earth due to gravitational centripetal force. If gravity becomes zero, no net force acts on the moon. According to Newton's first law, it will continue moving with its instantaneous velocity, which is tangential to its circular orbit. Thus, it begins to move tangentially.
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