Question

Find the force of interaction between the $2kg$ and $1kg$ bodies.

• A. $2N$
• B. $3N$
• C. $4N$
• D. $5N$

Answer 1

The correct option is A $2N$

FBD of system



Common acceleration
$a=\frac{F}{m}=\frac{12}{6}=2m/s^2$

FBD of $1kg$ block


$N_1=1\times a=1\times 2=2N$