A winch is capable of hauling a ton of bricks vertically two stories (6.25 m) in 19.5 s. If the winch’s motor is rated at 5.00 hp, determine its efficiency during raising the load.
Answer to relevant QuestionsA0.455-kg soccer ball is kicked off level ground at an angle of 40o with an initial speed of 30.0 m/s. Neglecting air resistance, (a) At its maximum height off the ground, its kinetic energy will be (1) less than its value ...Can all of the kinetic energy be lost in the collision of two objects? Explain. Explain the difference for each of the following pairs of actions in terms of impulse: (a) A golfer’s long drive and a short chip shot; (b) A boxer’s jab and a knockout punch; (c) A baseball player’s bunting action ...A loaded tractor-trailer with a total mass of 5000 kg traveling at hits a loading dock and comes to a stop in 0.64 s. What is the magnitude of the average force exerted on the truck by the dock? A pool player imparts an impulse of 3.2 N ∙ s to a stationary 0.25-kg cue ball with a cue stick. What is the speed of the ball just after impact?
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