Gravitational PEEasyQuestion 6226
Question
Gravitational PE of mass m at distance r from M (reference at infinity):
- AGMm/r
- B−GMm/rCorrect
- CGMm/r²
- D−GMm/r²
Correct answer
−GMm/r
Explanation
Gravitational PE = −GMm/r (negative because gravity is attractive and work done against field).