PHYS 1201 : Practice Exam 3
Document Summary
Practice exam 3: two forces, f1 and f2, act in three different ways on a box as shown below. The magnitude of f1 is twice that of f2. In each case, the box slides across the frictionless floor the same distance. Rank the net work done on the box by the two forces from smallest to largest. 3: 1, 2, 3, 3, 1, 2. E. 2, 3, 1: a ball is released on the inside surface of a half-pipe. The left side of the pipe is rough, so that the ball rolls there without slipping. The right side of the pipe is coated with frictionless ice. Neglect air resistance: h, higher than h, lower than h, there is no way to answer without knowing the mass of the ball. h. No friction: a physics-loving student is spinning on a frictionless stool while holding weights in his outstretched arms (see figure). After he folds his arms in close to his chest.
