Three equal weights of mass 2 kg each are hanging on a string passing over a fixed pulley as shown in fig What is the tension in the string connecting weights B and C?

Options

A. Zero
B. 6.6N
C. 3.3N
D. 19.6N

Answer

B

Explanation

`a=(2g)/(3)`
for C `2g-T=2xx(2g)/(3)`
`T-2g-(2)/(3)xx2g=(2g)/(3)=(20)/(3)=6.6N`