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(II) Two crates, of mass 65 kg and 125 kg, are in contact
Chapter 4, Problem 49P(choose chapter or problem)
Two crates, of mass 65 kg and 125 kg, are in contact and at rest on a horizontal surface (Fig. 4–57). A 650-N force is exerted on the 65-kg crate. If the coefficient of kinetic friction is 0.18, calculate
(a) the acceleration of the system, and
(b) the force that each crate exerts on the other.
(c) Repeat with the crates reversed.
Questions & Answers
QUESTION:
Two crates, of mass 65 kg and 125 kg, are in contact and at rest on a horizontal surface (Fig. 4–57). A 650-N force is exerted on the 65-kg crate. If the coefficient of kinetic friction is 0.18, calculate
(a) the acceleration of the system, and
(b) the force that each crate exerts on the other.
(c) Repeat with the crates reversed.
(Q49) Two crates, of mass 65 kg and 125 kg, are in contact and at rest on a horizontalsurface (Fig. 4–57). A 650-N force is exerted on the 65-kg crate. If the coefficient of kineticfriction is 0.18, calculate (a) the acceleration of the system, and (b) the force that each crateexerts on the other. (c) Repeat with the crates reversed. STEP BY STEP SOLUTIONStep 1 of 4:We have to find the acceleration of the combined system and the forces which each crate exertson each other.We will use Newton’s second and third law along with concept of friction.Given,We will assume that the first mass given is A and the second mass is B.Total mass of the system,Force applied to the system,Coefficient of dynamic friction,