At a construction site, a 62.0 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 (Eigure 1)). The cable pulls horizontally on the box, and a 49.0 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 B Find the friction force on the box. vo AEO F = 938 Submit Previous Answers Request Answer Figure < 1 of 1 X Incorrect; Try Again; 5 attempts remaining Gravel Part C Box Suddenly a worker picks up the bag of gravel. Use energy conservation to find the speed of the bucket after it has descended 1.70 m from rest (You can check your answer by solving this problem using Ngwton's laws) Hs = 0.700 %3D Hk = 0.400 vo AEO %3D m/s Concrete Submit Danuaet Aneuar P Pearson 10:34 PM 64A 4/17/2022 o search acer

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Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: