2. At a construction site, a 65.0-kg bucket of concrete hangs from a light cable that passes over a light, frictionless pulley and is connected to an 80.0-kg box on a horizontal roof as shown below. A 50.0-kg bag of gravel rests on top of the box. The coefficients of friction between the box and the roof are also shown. Gravel Box His 0.700 Mk = 0.400 = Concrete A. Find the friction force on the bag of gravel and box. B. Suddenly a worker picks up the bag of gravel. Find the speed of the bucket after it has descended 3.00 m from rest.

2. At a construction site, a 65.0-kg bucket of concrete hangs from a light cable that passes over a light, frictionless pulley and is connected to an 80.0-kg box on a horizontal roof as shown below. A 50.0-kg bag of gravel rests on top of the box. The coefficients of friction between the box and the roof are also shown. Gravel Box His 0.700 Mk = 0.400 = Concrete A. Find the friction force on the bag of gravel and box. B. Suddenly a worker picks up the bag of gravel. Find the speed of the bucket after it has descended 3.00 m from rest.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

2. At a construction site, a 65.0-kg bucket of concrete hangs from a light cable that passes over a light,
frictionless pulley and is connected to an 80.0-kg box on a horizontal roof as shown below. A 50.0-kg bag
of gravel rests on top of the box. The coefficients of friction between the box and the roof are also shown.
Gravel
Box
s = 0.700
Mk = 0.400
Concrete
A. Find the friction force on the bag of gravel and box.
B. Suddenly a worker picks up the bag of gravel. Find the speed of the bucket after it has descended 3.00
m from rest.

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