Physics, horizontal/contact force, help!!?

immortal

New member
Hey guys! I've got no idea how to do this problem and could really use some help. Thanks!

Two cartons sit next to, and touching, each other on a frictionless horizontal surface. The lighter carton has a mass of 5.29 kg and the heavier carton has a mass of 7.35 kg.

(a) Find the contact force between these cartons when a horizontal force of 3.7 N is applied to the light carton.

(b) If the 3.7 N force is applied to the heavy carton instead, is the contact force between the cartonss the same as, greater than, or less than the contact force in part (a)?

(c) Verify your answer to part (b) by calculating the contact force in this case.
 
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