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Three equal weight A,B and C of mass 2kg...

Three equal weight `A,B` and `C` of mass `2kg` each are hanging on a string passing over a fixed frictionless pulley as shown in the figure. The tension in the string connecting weights `B` and `C` is approximately

A

Zero

B

13 N

C

3.3 N

D

19.6 N

Text Solution

Verified by Experts

The correct Answer is:
B
Acceleration of system (a) `= ("Net pulling forces")/("Total mass")`
`a=((2g + 2g)-2g)/6 = 10/3 m//s^(2)`
Now, `2g-T = 2a`
`rArr T = 20 -20/3`
`= 40/3 N = 13 N`
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