question_answer

In the system shown in figure, tension \[{{T}_{3}}\] is:

A) 5g                    

B) 3g     

C) g                      

D) 6g

Correct Answer: D

Solution :

[d] \[{{T}_{1}}=3g.....(1)\]             \[{{T}_{2}}={{T}_{1}}=2g\] \[{{T}_{2}}=3g+2g......(2)\] \[{{T}_{2}}=5g\] \[{{T}_{3}}-{{T}_{2}}=1\times g....\,{{T}_{3}}-{{T}_{2}}=g\] \[T....\,{{T}_{3}}-{{T}_{2}}=g\,...(3)\]