A 500 pound push cart is rolled up an inclined plane that is 20 feet long. The vertical distance the object is raised is 4 feet. Assuming no friction, how much effort will it take to push the cart up the incline?
What will be an ideal response?
Output work = Output force x Output distance
Output work = 500 lb x 4 ft
Output work = 2000 ft-lbs.
With no friction, Input work equals Output work, therefore:
Input force = Input work / Input distance
Input force = 2000 ft-lbs / 20 feet
Input force = 100 lbs force.
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