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In warehouses, boxes get lifted up and down a lot, which is usually done by a...

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Physics

In warehouses, boxes get lifted up and down a lot, which isusually done by a forklift. A forklift has a maximum load it canhandle so you need to know the force acting on the fork. As anexample assume that you want to lift two heavy boxes with aforklift. The lower box A has a mass of 150 kg and the upper box Bhas a mass of 100 kg. Use g = 9.8 ?/?2

a) What is the magnitude of the force (inNewtons) that the forklift exerts on the lower box A while theboxes are moving up at constant speed?

b) What is the magnitude of the force (in Newtons) that theupper box B exerts on the lower box A while the boxes are moving upat constant speed?

c) The forklift has just picked up the boxes off the ground.What is the magnitude of the force that the forklift exerts on boxA while the boxes move up and speed up with an upward accelerationof ?=0.5?/?2 ?

d) Assume that the forklift has picked up the boxes from a highshelf and is lowering them to the ground. What is the magnitude ofthe force the upper box exerts on the lower box while the boxes areslowing down at a rate of ?=0.5?/?2

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