Well scythes are a typical way to cut grass, and they are basically just swinging a blade to do it - they just use a long handle to make it easy to move the bla

Well scythes are a typical way to cut grass, and they are basically just swinging a blade to do it - they just use a long handle to make it easy to move the blade fast enough. https://m.youtube.com/results?search_query=scythe+grass+cut https://m.youtube.com/results?search_query=scythe+grass+cut (I've no idea about the physics of required speed or blade sharpness, so don't know how feasible or not a robot cutting this way would be.)