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Which of the following is the correct unit for the universal gravitational constant $G$?
- A.$\text{N m}^2/\text{kg}^2$
- B.$\text{N m/kg}$
- C.$\text{N/kg}^2$
- D.$\text{N m}^2/\text{kg}$
Show correct answer & step-by-step solution
Correct answer: A — $\text{N m}^2/\text{kg}^2$
Solution
From Newton's law of gravitation , we can rearrange to find . Substituting the units for force, distance, and mass gives .
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