In this work we investigate the interplay between gravity and turbulence at different spatial scales and in different density regimes .
We analyze a sample of 70 \mu m quiet clumps that are divided into three surface density bins and we compare the dynamics of each group with the dynamics of their respective filaments .
The densest clumps form within the densest filaments on average , and they have the highest value of the velocity dispersion .
The kinetic energy is transferred from the filaments down to the clumps most likely through a turbulent cascade , but we identify a critical value of the surface density , \Sigma \simeq 0.1 g cm ^ { -2 } , above which the dynamics changes from being mostly turbulent-driven to mostly gravity-driven .
The scenario we obtain from our data is a continuous interplay between turbulence and gravity , where the former creates structures at all scales and the latter takes the lead when the critical surface density threshold is reached .
In the densest filaments this transition can occur at the parsec , or even larger scales , leading to a global collapse of the whole region and most likely to the formation of the massive objects .