upon the rim ......? of a cylindrical can filled with water. The 30-cm mark of the stick lies directly at the center of the circular cross section of the can. A 40-gm ball is hung on the 100cm end, while a wooden block of weight W is placed near the zero end to maintain balance. What is the magnitude and distance of W from the zero-end such that the meter stick will not overturn to either side while the ball is there and also when the ball is removed.