8.-(15 Points) You are a consultant to a construction company and the company needs to know some of the physics of their day-to-day activities in order to comply with safety regulations. Imagine that at a construction site, a 65.0-kg bucket of concrete hangs from a light cable that passes over a light, friction-free pulley and is connected to an 80 O-kg box on a horizontal roof. The cable pulls horizontally on the box, and a 50.0-kg bag of gravel rests on top of the box. The coefficients of friction between the box and roof are shown. (a) Find the friction force on the bag of gravel and on the box. (b) Suddenly a worker picks up the bag of gravel. Use energy conservation to find the speed of the bucket after it has descended 2.00 m from rest.

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8 15 points you are a consultant to a construction company and the com

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8.-(15 Points) You are a consultant to a construction company and the company needs to know some of the physics of their day-to-day activities in order to comply with safety regulations. Imagine that at a construction site, a 65.0-kg bucket of concrete hangs from a light cable that passes over a light, friction-free p