In the system shown in figure the acceleration of \( \mathrm{P} \) ...

In the system shown in figure the acceleration of
\( \mathrm{P} \) the \( 1 \mathrm{~kg} \) mass is :-

W
(1) \( \frac{g}{4} \) downward
(2) \( \frac{g}{4} \) upward
(3) \( \frac{g}{2} \) downward
(4) \( \frac{g}{2} \) upward