Q 11-04-009NEETNEET 2023Top questionEasy
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 $0.15$ ($g = 10\ \text{m s}^{-2}$).
Answer: (C) $1.5\ \text{m s}^{-2}$
Concept. Static friction alone accelerates the body: $ma \le \mu_smg$.
Step 1. Maximum. $a_{\max} = 0.15 \times 10 = 1.5\ \text{m s}^{-2}$.
Answer. $1.5\ \text{m s}^{-2}$ (Option C).
Solution by Sreeraj P, M.Sc Physics