the dual spring system stops the movement of a steel ball weighing 7500 / moving along the roller track at a speed of 3 m/s, where k = 5000 n/ and 2 = 7500 n/m. find the distance at which the impact plate 4 will travel. go to the right as much as possible when able to successfully stop the stone.

The safe load, l, of a wooden beam of width w, height h, and length l, supported at both ends, varies directly as the product of the width and the square of the height, and inversely as the length. a wooden beam 4 inches wide, 9 inches high, and 240 inches long can hold a load of 6810 pounds. what load would a beam 3 inches wide, 8 inches high, and 144 inches long, of the same material, support? (round off your answer to the nearest integer.)