Question

The block $\text{B}$ has a mass of $10\text{kg}$. The coefficient of friction between block $\text{B}$ and the surface is $\mu =0.5$. Determine the acceleration of the block $\text{A}$ of mass $16\text{kg}$. Neglect the mass of the pulleys and cords. (Take $g=10{\text{m/s}}^2)$.

• A. Zero
• B. $2{\text{m/s}}^2$
• C. $1{\text{m/s}}^2$
• D. None of these

Answer 1

The correct option is A Zero



Maximum friction force is $\mu mg=0.5\times 100=50\text{N}$
which is greater than $40\text{N}$, tension in the string attched to it.
$\therefore$ Block does not move