Question

In the figure shown, the $12kg$ body pulled by a string with an acceleration $a=2.2m/s^2$. The tension $T_1$ and $T_2$ will be respectively
(Take $g=9.8m/s^2$)

• A. $200N,80N$
• B. $240N,90N$
• C. $240N,96N$
• D. $260N,96N$

Answer 1

The correct option is C $240N,96N$

Considering FBD of combined mass of $20kg$,

$T_1-mg=ma=20(9.8+2.2)=240N$
Considering FBD of $8kg$ mass,

$T_2-mg=ma=m(a+g)=8\times (2.2+9.8)=96N$