Gravitational field strength g is found from g = W/m. What is its unit?
Question 1 Report
Gravitational field strength g is found from g = W/m. What is its unit?
Answer Details
Gravitational field strength \(g\) is defined by the equation \(g = W/m\), where \(W\) is weight measured in newtons (N) and \(m\) is mass measured in kilograms (kg). To find the unit of \(g\), substitute the units into the equation:
\[ \text{unit of } g = \frac{\text{unit of } W}{\text{unit of } m} = \frac{\text{N}}{\text{kg}} = \text{N/kg} \]
This tells you that for every kilogram of mass, there is a certain number of newtons of gravitational force. On Earth's surface, \(g \approx 10\) N/kg, meaning every kilogram of mass experiences about 10 N of gravitational pull.
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