(1) Suppose you lift a stone that has a mass of 5.9 kilograms off the floor onto a shelf that is 1.5 meters high. How much work have you done? Joules (2) Suppose you lift a laptop that weighs 5.8 pounds off the floor onto a shelf that is 5 feet high. How much work have you done? 29 foot-pounds (3) The force on a particle is described by 2x³ + 5 pounds at a point æ feet along the x-axis. Find the work done in moving the particle from the origin to x = 3. foot-pounds

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