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MHT CET202020 Oct 2020Morning ShiftPhysicsGravitationActual

When the value of acceleration due to gravity ' g ' becomes ( g 3 ) above the earth's surface at height 'h' then relation between 'h' and 'R' is [R = radius of the earth]

Options

  1. Ah = R ( 3 -1)
  2. Bh = R
  3. Ch = R ( 2 -1)
  4. Dh =2 R

Correct answer

A. h = R ( 3 -1)

Step-by-step solution

g 3 = G M (R+h)² g= G M R² g 3 (R+h)²=g R²(R+h)²=3 R² R + h = 3 R h = 3 R - R =( 3 -1) R

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