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We present the results on the physical properties of filaments and densecores in IC 5146, as a part of the TRAO FUNS project. We carried out On-The-Flymapping observations using the Taeduk Radio Astronomy Observatory (TRAO) 14mtelescope covering about 1 square degree of the area of IC 5146 using variousmolecular lines. We identified 14 filaments (24 in total, includingsub-filaments) from the C$^{18}$O (1-0) data cube and 22 dense cores from the$\rm N_{2}H^{+}$ (1-0) data. We examined the filaments' gravitationalcriticality, turbulence properties, accretion rate from filaments to densecores, and relative evolutionary stages of cores. Most filaments in IC 5146 aregravitationally supercritical within the uncertainty, and most dense cores areformed in them. We found that dense cores in the hubs show a systemic velocityshift of ~0.3 km/s between the $\rm N_{2}H^{+}$ and C$^{18}$O gas. Besides,these cores are subsonic or transonic, while the surrounding filament gas istransonic or supersonic, indicating that the cores in the hubs are likelyformed by the turbulence dissipation in the colliding turbulent filaments andthe merging is still ongoing. We estimated the mass accretion rate of $15 -35~M_{\odot}~\rm Myr^{-1}$ from the filaments to the dense cores, and therequired time scales to collect the current core mass are consistent with thelifetime of the dense cores. The structures of filaments and dense cores in thehub can form by a collision of turbulent converging flows, and mass flow alongthe filaments to the dense cores may play an important role in forming densecores.

TRAO Survey of the nearby filamentary molecular clouds, the universal nursery of stars (TRAO FUNS). II. Filaments and Dense cores in IC 5146