A \( 10 \mathrm{~kg} \) mass is resting on a horizontal surface and horizontal force of \( 80 \m...

A \( 10 \mathrm{~kg} \) mass is resting on a horizontal surface and horizontal force of \( 80 \mathrm{~N} \) is applied. If \( \mu=0.2 \), the ratio of acceleration without and with friction is \( \left(g=10 \mathrm{~ms}^{-2}\right) \)