A block of mass (10, kg) is placed on rough horizontal surfa... | Physics | SolveeIt | Solveeit

Today, August 23

Question

A block of mass $10\, kg$ is placed on rough horizontal surface whose coefficient of friction is $0.5$ . If a horizontal force of $100 \,N$ is applied on it, then acceleration of the block will be :-

A

$10\, m/s^{2}$

B

$5 \,m/ s^{2}$

C

$15 \,m/ s^{2}$

D

$0.5 \,m/s^{2}$

Answer

$5 \,m/ s^{2}$

Explanation

Solution

$f _{\text{\max }}=\mu N =\mu \,Mg =(0.5)(10)(10)=50 \,N$

$\Rightarrow\, a =\frac{\text { net force }}{\text { mass }}$
$=\frac{100-50}{10}$
$=5\, m / sec ^{2}$