Question

If the length of Rough inclined plane is $10m$ and the value of g is $10m/s^2$ and the Angle of Inclination is ${30}^o$ and coefficient of friction is $0.2$, then the Acceleration of the block is ___

• A. $4.13$
• B. $3.27$
• C. $1.43$
• D. $1.34$

Answer 1

The correct option is B $3.27$

$a_{cc}=g\sin \theta -\mu g\cos \theta$

$=10\times \frac{1}{2}-0.2\times 10\times \frac{\sqrt{3}}{2}$

$=5-1.73$

$=3.27m/s^2$

Hence,

Option $B$ is correct answer.