Question

A block of mass 10 kg placed on the rough horizontal surface having a coefficient of friction µ = 0.5, if a horizontal force of 100 N acting on it then the acceleration of the block will be :

• A. 10 m/s2
• B. 5 m/s2
• C. 15 m/s2
• D. 0.5 m/s2

Answer 1

Answer: (B)

5 m/s2

Answer 2

The correct option is (B): 5 m/s2

fmax = µN = µMg = (0.5) (10) (10) = 50 N
$\Rightarrow$ a = $\frac{net\,force}{mass}$
= 100 – $\frac{50}{10}$
= 5 m/sec2