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NEET 2023 · Friction Basics

Friction Basics question from NEET 2023

Q7NEET 2023Easy

Friction Basics

Calculate the maximum acceleration of a moving car so that a body lying on the floor of the car remains stationary. The coefficient of static friction between the body and the floor is 0.15 $\left(g = 10\text{ m s}^{-2}\right)$ .

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Answer: (b)

Friction alone accelerates the body: $ma \le \mu_s mg$ .
$a_{max} = \mu_s g = 0.15 \times 10$
$a_{max} = 1.5\text{ m s}^{-2}$ , so the answer is (b).

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