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Q: The value of ‘g’ (gravity) varies from the value of ‘R’ (radius). A student would observe minimum ‘g’ at the:
  • A. Equator
  • B. Tropic of Capricorn
  • C. Poles
  • D. Tropic of Cancer
Correct Answer: Option A - Gravitational acceleration is the acceleration of an object in free fall within a vacuum (and thus without experiencing drag). This is the steady gain in speed caused exclusively by the force of gravitational attraction which is denoted as ‘g.’ The value of gravitational acceleration depends upon the mass and radius of the earth. Though the mass of the earth is fixed and the value of radius is ever-changing because the earth is not round instead sphere in shape .The radius changes with the change in place. The value of radius is least at the poles whereas highest on the equator. Gravitational acceleration is inversely proportional to radius. So gravitational acceleration is least at the equator and highest on the poles.
A. Gravitational acceleration is the acceleration of an object in free fall within a vacuum (and thus without experiencing drag). This is the steady gain in speed caused exclusively by the force of gravitational attraction which is denoted as ‘g.’ The value of gravitational acceleration depends upon the mass and radius of the earth. Though the mass of the earth is fixed and the value of radius is ever-changing because the earth is not round instead sphere in shape .The radius changes with the change in place. The value of radius is least at the poles whereas highest on the equator. Gravitational acceleration is inversely proportional to radius. So gravitational acceleration is least at the equator and highest on the poles.

Explanations:

Gravitational acceleration is the acceleration of an object in free fall within a vacuum (and thus without experiencing drag). This is the steady gain in speed caused exclusively by the force of gravitational attraction which is denoted as ‘g.’ The value of gravitational acceleration depends upon the mass and radius of the earth. Though the mass of the earth is fixed and the value of radius is ever-changing because the earth is not round instead sphere in shape .The radius changes with the change in place. The value of radius is least at the poles whereas highest on the equator. Gravitational acceleration is inversely proportional to radius. So gravitational acceleration is least at the equator and highest on the poles.