Q.
Two bodies of mass 4 kg and 6 kg are attached to the ends of a string passing over a pulley. The 4 kg mass is attached to the table by another string. The tension in this string $T_{1}$ is
A) 19.6 N
B) 25 N
C) 10.6 N
D) 10 N
Explanation
(a) For body of mass 6 kg
$T = 6g = 6 \times 9.8 = 58.8$ N
For body of mass 4 kg
$T - T_{1} = 4g = 4 \times 9.8 = 39.2$ N
$T_{1} = T - 39.2$
$= 58.8 - 39.2 = 19.6$ N
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.