If the mass of the Earth were to double while its radius remained the same, what would happen to the gravitational acceleration at its surface?
Practice Questions
1 question
Q1
If the mass of the Earth were to double while its radius remained the same, what would happen to the gravitational acceleration at its surface?
It would double
It would remain the same
It would halve
It would increase by a factor of four
Gravitational acceleration is directly proportional to mass, so if the mass doubles, g also doubles.
Questions & Step-by-step Solutions
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Q
Q: If the mass of the Earth were to double while its radius remained the same, what would happen to the gravitational acceleration at its surface?
Solution: Gravitational acceleration is directly proportional to mass, so if the mass doubles, g also doubles.
Steps: 8
Step 1: Understand that gravitational acceleration (g) depends on the mass of the object and the distance from its center.
Step 2: Recall the formula for gravitational acceleration: g = G * (M / R^2), where G is the gravitational constant, M is the mass, and R is the radius.
Step 3: Note that in this scenario, the radius (R) of the Earth remains the same.
Step 4: If the mass (M) of the Earth doubles, we can represent this as 2M.
Step 5: Substitute the new mass into the formula: g = G * (2M / R^2).
Step 6: Simplify the equation: g = 2 * (G * (M / R^2)).
Step 7: Recognize that (G * (M / R^2)) is the original gravitational acceleration (g).
Step 8: Therefore, if the mass doubles, the new gravitational acceleration is 2g, meaning it also doubles.
