QuestionApril 17, 2026

What unit must mass be in order to use the universal law of gravitation equation? Kilograms Grams Pounds Newtons

What unit must mass be in order to use the universal law of gravitation equation? Kilograms Grams Pounds Newtons
What unit must mass be in order to use the universal law of gravitation equation? Kilograms Grams Pounds Newtons

Solution
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Answer

Kilograms Explanation 1. Recall the universal law of gravitation The equation is F = G \frac{m_1 m_2}{r^2} where G = 6.674 \times 10^{-11} \ \text{N·m}^2/\text{kg}^2. 2. Identify mass units from G Since G has units \text{kg}^2 in the denominator, mass must be in kilograms.

Explanation

1. Recall the universal law of gravitation<br /> The equation is $F = G \frac{m_1 m_2}{r^2}$ where $G = 6.674 \times 10^{-11} \ \text{N·m}^2/\text{kg}^2$.<br />2. Identify mass units from $G$<br /> Since $G$ has units $\text{kg}^2$ in the denominator, mass must be in kilograms.
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