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What is the minimum force required to be applied by the finger to hold a block of mass M against a rough vertical wall, given that the coefficient of friction between the block and the wall is µ and the acceleration due to gravity is g ?

Options

  1. AF = Mg/µ
  2. BF = Mg + µ
  3. CF = Mg/µ 2
  4. DF = Mg - µ

Correct answer

A. F = Mg/µ

Step-by-step solution

Correct Option is : (A) F = Mg/µ

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