Three masses of 1 kg, 6 kg and 3 kg are connected to each other with massless strings and are placed on a table as shown in figure.

If `g=10 m s^(-2)`, the acceleration with which the system is moving is

Options

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

Answer

B

Explanation

(b) The acceleration of the system
`a=((m_(2)m_(1))g)/((m_(1)+m_(2)+M))=((3-1)g)/((1+3+6))`
`=(2g)/(10)=(g)/(5)=(10)/(5)=2 ms^(-2)`