Q. Three weight $A,\ B$ and $C$ are connected by string as shown in the figure. The system moves over a frictionless pulley. The tension in the string connecting $A$ and $B$ is (where $g$ is acceleration due to gravity)

A) $g$
B) $\frac{g}{9}$
C) $\frac{8g}{9}$
D) $\frac{10g}{9}$
Explanation

(d) $T = \frac{2 \times m_{B}m_{C}}{m_{A} + m_{B} + m_{C}} \times g = \frac{2 \times 1 \times 5}{3 + 1 + 5} \times g = \frac{10}{9}g$

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.

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