Question

Three blocks A, B and C weighing 1, 8 and 27 kg respectively are connected as shown in the figure with an in extensible string and are moving on a smooth surface. $T_3$ is equal to 36 N. Then $T_2$ is

• A. 18 N
• B. 9 N
• C. 3.375 N
• D. 1.25 N

Answer 1

The correct option is B

9 N

$T_2=(m_A+m_B)\times \frac{T_3}{m_A+m_B+m_C}$
$T_2=(1+8)\times \frac{36}{1+8+27}=9N$