What is the gravitational potential at a distance 'r' from a point mass 'M'?
Correct Answer: V = -GM/r
- Step 1: Understand that gravitational potential is a measure of the potential energy per unit mass at a point in a gravitational field.
- Step 2: Identify the point mass 'M' which creates the gravitational field.
- Step 3: Recognize that 'r' is the distance from the point mass 'M' to the point where we want to calculate the gravitational potential.
- Step 4: Recall the formula for gravitational potential, which is V = -GM/r, where G is the gravitational constant.
- Step 5: Substitute the values of G, M, and r into the formula to find the gravitational potential V.
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