Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download DragRigidBody2D Free.
DragRigidBody2D
This package will get you up and dragging RigidBody2D game objects around in under 5 minutes. It is as simple as attaching a script to your camera, tweaking a few values, and deciding which layers should be draggable. It’s that easy! Works on Standalone (PC, Mac, Linux), webplayer (WebGL), and mobile platforms.
Check out a video of it in action!
Multi-touch is also supported on mobile!
Options include:
– Multiple drag layers
– Drag hook events such as OnStartDrag and OnStopDrag
– Drag damping
– Rotation freezing
– Snapping to center
– Drag relative to another rigid body
Examples are included with the package to get you started.
Recently updated for Unity 2019