A block of mass m is held in equilibrium against a vertical wall by a…

Physics JAMB 1989

A block of mass m is held in equilibrium against a vertical wall by a horizontal force. If the coefficient of friction between the wall and the block is µ, the minimum value of the horizontal force is

  • µmg
  • (1-µ)mg
  • (1+µ)mg checkmark
  • mg/µ

The correct answer is: C

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