Three masses of 1 kg, 6 kg and 3 kg are connected to each other with threads and are placed on a table as shown in figure. What is the accelration with which the system is moving? Take `g=10ms^(-2)`:

Options

A. Zero
B. `2 ms^(-2)`
C. `4 ms^(-2)`
D. `3 ms^(-2)`

Answer

B

Explanation

`3g-T_(2)=3a`
`T_(2)-T_(1)=6a`
`T_(1)-g=a`
`therefore 2g=10a`
`a=2m//s^(2)`