What do you mean by acceleration due to gravity?

Answer:

When an object falls freely towards the surface of the earth from a certain height, then its velocity changes. This change in velocity produces acceleration in the object which is known as acceleration due to gravity denoted by the letter g. The value of acceleration due to gravity is g= 9.8 m/s2.

Acceleration due to Gravity – Formula, Unit and Values

Symbol g
Dimensional Formula M0L1T-2
SI Unit ms-2
Formula g = GM/r2

Factors that affect acceleration due to gravity

The value of acceleration due to gravity ‘g’ is affected by

  • Altitude above the earth’s surface.
  • Depth below the earth’s surface.
  • The shape of the earth.
  • Rotational motion of the earth.

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