NEET Physics Friction MCQ Question
A block of mass 10 kg is sliding on a horizontal surface with a coefficient of kinetic friction μ_k = 0.3. What is the magnitude of the frictional force acting on the block?
29.4 N
30 N
3 N
300 N
Correct Answer
Detailed Explanation
The frictional force is given by f_k = μ_k * N, where N = mg. Here, N = 10 kg * 9.8 m/s² = 98 N, so f_k = 0.3 * 98 N = 29.4 N.
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