Question

If $10N$ force is applied on bigger block as shown in figure then, the contact force between two block is [All the surface frictionless]

• A. $\frac{20}{3}N$
• B. $\frac{40}{3}N$
• C. $\frac{10}{3}N$
• D. $10N$

Answer 1

The correct option is C $\frac{10}{3}N$

Considering the two blocks as a single block of mass 3m

10=3ma

$ma=\frac{10}{3}$

Equation on 2m block

10-T=2ma

$T=10-\frac{2\times 10}{3}=\frac{10}{3}N$