# A block of mass $5 \mathrm{~kg}$ is (i) pushed in case (A) and (ii) pulled in case (B), by a force $\mathrm{F}=20 \mathrm{~N}$, making an angle of $30^{\circ}$ with the horizontal, as shown in the figures. The coefficient of friction between the block and floor is $\mu=0.2$. The difference between the accelerations of the block, in case (B) and case (A) will be: $\left(g=10 \mathrm{~ms}^{-2}\right)$

Question:

A block of mass $5 \mathrm{~kg}$ is (i) pushed in case (A) and (ii) pulled in case (B), by a force $\mathrm{F}=20 \mathrm{~N}$, making an angle of $30^{\circ}$ with the horizontal, as shown in the figures. The coefficient of friction between the block and floor is $\mu=0.2$. The difference between the accelerations of the block, in case (B) and case (A) will be: $\left(g=10 \mathrm{~ms}^{-2}\right)$

1. $0.4 \mathrm{~ms}^{-2}$

2. $3.2 \mathrm{~ms}^{-2}$

3. $0.8 \mathrm{~ms}^{-2}$

4. $0 \mathrm{~ms}^{-2}$

JEE Main Previous Year Single Correct Question of JEE Main from Physics Laws of Motion chapter.

JEE Main Previous Year 12 April 2019

Correct Option: 3

Solution:

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