A circular disc with  a groove  along  its diameter  is placed horizontally on  a rough  surface. A block  of mass  1 kg  is placed  as shown  .The co-efficient  of friction  between  the block  and all surfaces of  groove and horizontal  surface  in contact  is $\text{μ=}\frac{\text{2}}{\text{5}}$. The disc  has an acceleration of ${\text{25m/s}}^{\text{2}}$towards  left.  The acceleration $\left({\text{in\hspace{0.17em}m/s}}^{\text{2}}\right)$ of the block  with respect  to disc  is 5x find the  x value (Given  $\text{cosθ=}\frac{\text{4}}{\text{5}}\text{,sinθ=}\frac{\text{3}}{\text{5}}$)