Question
Distinguish between the following: universal gravitational constant and gravitational acceleration of the earth.
✓
Answer
Universal gravitational constant:
- The universal gravitational constant numerically equals the force of attraction masses separated by a unit distance.
- Its value remains constant throughout the universe.
- It has magnitude but not direction.
- Its SI unit is N.m^2 /kg^2 .
- The gravitational between two unit acceleration of the earth is the acceleration produced in a body due to the gravitational force of the earth.
- Its value changes from place to place.
- It has both magnitude and direction.
- Its SI unit is $m/s^2$
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