When I was a kid, we went to Lake Erie from time to time. At the wharfs, I found that I could move a large ship that was moored simply by standing on the rope which was about as wide as a balance beam. After standing on the rope for awhile, I would have it on the concrete and see where the ship had moved just a little bit towards the wharf.
Current-day Ion Propulsion Systems (they do exist) apply the force equivalent to the “weight” of one sheet of paper. And yet they can move a spacecraft to thousands of miles per hour.