Constant At a construction site, a 60.0 kg bucket of concrete hangs from a light (but strong) cable that passes over a light friction-free pulley and is connected to an 85.0 kg box on a horizontal roof (see the figure (Figure 1). The cable pulls horizontally on the box, and a 50 o kg bag of and roof are shown. The system is not moving rests on top of the box. The coefficients of friction between the box • Part A Find the friction force on the bag of gravel. Express your answer in newtons. Submit Reauest Answer |- • Part B Find the friction force on the box Express your answer in newtons. gure 1 of 1 Gravel Воx Reauest Answer Submit |- 4, = 0.700 Part C H = 0.400 Suddenly a worker picks up the bag of gravel. Use energy conservation to find the speed of the bucket after it has descended 250 m from rest. (You can check your answer by solving this problem using Newton's laws.) Concrete Express your answer in meters per second.

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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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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Constants
At a construction site, a 60.0 kg bucket of concrete hangs from a light (but strong) cable
that passes over a light friction-free pulley and is connected to an 85.0 kg box on a
horizontal roof (see the figure (Figure 1)). 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. The system is not moving.
Part A
Find the friction force on the bag of gravel.
Express your answer in newtons.
V AEO
?
Fbag =
N
Submit
Request Answer
Part B
Find the friction force on the box.
Express your answer in newtons.
Figure
< 1 of 1
HV ΑΣφ
?
For =
Gravel
Box
Submit
Request Answer
|-
us = 0.700
Part C
Mk = 0.400
Suddenly a worker picks up the bag of gravel. Use energy conservation to find the speed of the bucket after it has descended 2.50 m from rest. (You can check your answer by solving this problem using Newton's
laws.)
Concrete
Express your answer in meters per second.
Transcribed Image Text:Constants At a construction site, a 60.0 kg bucket of concrete hangs from a light (but strong) cable that passes over a light friction-free pulley and is connected to an 85.0 kg box on a horizontal roof (see the figure (Figure 1)). 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. The system is not moving. Part A Find the friction force on the bag of gravel. Express your answer in newtons. V AEO ? Fbag = N Submit Request Answer Part B Find the friction force on the box. Express your answer in newtons. Figure < 1 of 1 HV ΑΣφ ? For = Gravel Box Submit Request Answer |- us = 0.700 Part C Mk = 0.400 Suddenly a worker picks up the bag of gravel. Use energy conservation to find the speed of the bucket after it has descended 2.50 m from rest. (You can check your answer by solving this problem using Newton's laws.) Concrete Express your answer in meters per second.
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