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Three boxes 4.0 kg 7.0 kg 3.0 kg The picture shows three boxes, with a force F, directed down and to the right, applied to

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Three boxes 4.0 kg 7.0 kg 3.0 kg The picture shows three boxes, with a force F, directed down and to the right, applied to the 4.0 kg box. Use g = 10.0 leg. Let's start with the situation in which there is no friction between the boxes and the floor. @ Part (a) 0 Homework I Unanswered I Due Oct3rd,12:15 PM Use these numbers for all parts of this problem: F = 80.0 N and B = 40.0\". With no friction, calculate the acceleration of the system. m/52 Type your numeric answer and submit Unanswered o 5attempts left {I Submit @ Part (b) 0 Homework I Unanswered I Due Oct3rd,12:15 PM Continuing with this no-friction situation, how much force does the 4.0 kg box exert on the 7.0 kg box? N Type your numeric answer and submit Now, we'll switch to a new situation, where there is some friction between the boxes and the horizontal surface. Take the coefficient of kinetic friction between each box and the surface to be 0.200 , and assume that the boxes are initially moving to the right. Assume there is no friction for the vertical surfaces where the boxes touch each other. @ Part(c} o Homework Unanswered DueOc't3rd,12:15PM Calculate the acceleration ofthe system now. Express your answer as a positive value ifthe acceleration is directed to the right, and a negative value if the acceleration is directed to the left. m/s2 Type your numeric answer and submit : Unanswered o 5 attem ts left a Part (d) Homework I Unanswered I Due Oct3rd, 12:15 PM Continuing with this case in which there is friction, determine the force the 7.0 kg box exerts on the 3.0 kg box. N Type your numeric answer and submit

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