Q. Three blocks of masses $2\ kg,\ 3\ kg$ and$\ 5\ kg$ are connected to each other with light string and are then placed on a frictionless surface as shown in the figure. The system is pulled by a force $F = 10\ N$, then tension $T_{1} =$
A) $1\ N$
B) $5\ N$
C) $8\ N$
D) $10\ N$
Explanation
(c) $T_{1} = \left( \frac{m_{2} + m_{3}}{m_{1} + m_{2} + m_{3}} \right)g = \frac{3 + 5}{2 + 3 + 5} \times 10 = 8\ N$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.