A box rests on the floor of a truck with coefficient of static friction 0.15. The maximum acceleration of the truck for which the box does not slide is (g = 10 m s⁻²):
A15 m s⁻²
B1.5 m s⁻²
C6.7 m s⁻²
D0.15 m s⁻²
Answer & Solution
Correct answer: B. 1.5 m s⁻²
The box is driven only by static friction, so a_max = μs·g = 0.15×10 = 1.5 m s⁻². Above this it slides.
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