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Maximum friction force = μmg = 6 × 1 × 9.8 = 5.88 N. But here required friction force = ma = 1 × 5 = 5 N.

1. Maximum friction force = μmg
2. μ = 6 × 1 × 9.8
3. ma = 1 × 5
4. 5 N

Correct answer: Maximum friction force = μmg

Solution

The maximum friction force is given by the formula μmg, where μ is the coefficient of friction, m is the mass, and g is the acceleration due to gravity. This matches option A.

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