Question

Find the maximum force $F$ to be applied for the system shown, so that the two blocks move together. Take $g=10{\text{m/s}}^2$.

• A. $30\text{N}$
• B. $50\text{N}$
• C. $60\text{N}$
• D. $70\text{N}$

Answer 1

The correct option is A $30\text{N}$

We know that by formula,
as ${\mu }_1=0$,
$F_{max}=(m_1+m_2){\mu }_{2}g=\left(5\right)\left(0.6\right)10=30\text{N}$.
Hence the maximum force will be $\text{30 N}$