Physics
General
Easy

Question

A steel ball of diameter 3.2 mm falls under gravity through an oil of density 920kgstraight m to the power of negative 3 end exponent and viscosity  1.64Nsstraight m to the power of negative 2 end exponent. The density of steel may be taken as7820kgm to the power of negative 3 end exponent What is the terminal velocity of the ball?

  1. 3.45 cms to the power of negative 1 end exponent
  2. 4.25 cms to the power of negative 1 end exponent
  3. 1.85 cms to the power of negative 1 end exponent
  4. 2.35 cms to the power of negative 1 end exponent

The correct answer is: 2.35 cms to the power of negative 1 end exponent

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