NEET Physics Friction MCQ Question
A block of mass 5 kg is at rest on a horizontal surface. The coefficient of static friction between the block and the surface is 0.4. What is the minimum horizontal force required to make the block start moving?
19.6 N
20 N
15 N
25 N
Correct Answer
Detailed Explanation
The minimum force required to overcome static friction is given by the product of the coefficient of static friction and the normal force. Here, it is 0.4 * 5 kg * 9.8 m/s² = 19.6 N.
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