Question

If the length of smooth inclined plane is 10 m and the value of g is $10m/s^2$ and angle of inclination is ${30}^0$, then the acceleration of block is

• A. $5m/s^2$
• B. $2.5m/s^2$
• C. $1m/s^2$
• D. $2m/s^2$

Answer 1

The correct option is A $5m/s^2$

Given,

Length of the smooth inclined plane, $l=10m$

The value of acceleration due to gravity, $g=10m/s^2$

The angle of inclination, $\theta ={30}^0$

The angle of the acceleration of the block will be,

$a=gsin{30}^0$

$a=10\times \frac{1}{2}=5m/s^2$

The correct option is A.