Time varying force horizontal $\text{F}={\text{K}}_{\text{0}}\text{t}$ is applied on a block of mass ‘m’ placed at rest on a rough horizontal surface ($\mu$  is coefficient of friction). At a time$\text{t}=\frac{3\mu \text{mg}}{{\text{K}}_{\text{0}}}$ , the acceleration of the block is given by $\text{a}=\text{p}\mu \text{g}$ where p = ...... (${\text{K}}_{\text{0}}$ is a positive constant)