Q. Two masses $M$ and $m$ are connected by a weightless string. They are pulled by a force $F$ on a frictionless horizontal surface. The tension in the string will be
A) $\frac{FM}{m + M}$
B) $\frac{F}{M + m}$
C) $\frac{FM}{m}$
D) $\frac{Fm}{M + m}$
Explanation
(a) $T = M \times a = M \times \left( \frac{F}{m + M} \right)$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.