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Physics · LAWS OF MOTION
हिन्दीA heavy wooden box rests on the flat floor of a train compartment accelerating horizontally at \( a = 2\text{ m/s}^2 \). Taking \( g = 10\text{ m/s}^2 \), the minimum coefficient of static friction between the box and the floor required to prevent the box from slipping relative to the train floor is:
Correct answer · Option 1
0.20
Explanation
For the box not to slip, static friction must provide the horizontal acceleration: \( f_s = ma \le \mu_s mg \Rightarrow \mu_s \ge \frac{a}{g} = \frac{2}{10} = 0.20 \).
