Alex is asked to move two boxes of books in contact with each other and resting on a rough floor. He decides to move them at the same time by pushing on box A with a horizontal pushing force F.- 9.1 N. Here A has a mass m - 10.2 kg and B has a mass m - 7.0 kg. The contact force between the two boxes is F.. The coefficient of kinetic friction between the boxes and the floor is 0.02. (Assume F, acts in the +x direction.) (a) What is the magnitude (in m/s?) of the acceleration of the two boxes? m/s2 (b) What is the force exerted on m, by m,? In other words what is the magnitude (in N) of the contact force F,? (c) If Alex were to push from the other side on the 7.0-kg box, what would the new magnitude (in N) of F. be?
Alex is asked to move two boxes of books in contact with each other and resting on a rough floor. He decides to move them at the same time by pushing on box A with a horizontal pushing force F.- 9.1 N. Here A has a mass m - 10.2 kg and B has a mass m - 7.0 kg. The contact force between the two boxes is F.. The coefficient of kinetic friction between the boxes and the floor is 0.02. (Assume F, acts in the +x direction.) (a) What is the magnitude (in m/s?) of the acceleration of the two boxes? m/s2 (b) What is the force exerted on m, by m,? In other words what is the magnitude (in N) of the contact force F,? (c) If Alex were to push from the other side on the 7.0-kg box, what would the new magnitude (in N) of F. be?
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter5: Newton's Laws Of Motion
Section: Chapter Questions
Problem 83PQ: Three crates with masses m1 = 5.45 kg, m2 = 7.88 kg, and m3 = 4.89 kg are in contact on a...
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