NEET 2026 — Physics solution

NEET2026Physics

A box of mass 15 kg is kept on the floor of a stationary trolley. The coefficient of static friction between the box and the trolley is 0.12. Keeping the box in stationary state over the trolley, the maximum acceleration with which the trolley can be moved horizontally in m s $^{- 2}$ is :

(g = 10 m/s $^{2}$ )

A
1.8
B
1.2
C
1.5
D
2.1

Solution

For the box not to slide, the static friction must provide its acceleration. The maximum static friction gives the limiting acceleration:

$m a_{ma x} = μ m g$

$a_{ma x} = μg = 0.12 \times 10 = 1.2$ m/s $^{2}$ .

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