Three Blocks Are Connected by Massless Cords and Rest on a Frictionless

question 71

Multiple Choice

Three blocks are connected by massless cords and rest on a frictionless horizontal surface. The blocks are pulled to the right. Mass m₁ = 2 m₂ = 3 m₃, with m₁ on the left and m₃ on the right. If the pulling force is equal to 90 N, then the tension in the cord between m₁ and m₂ is

• A) 49 N
• B) 15 N
• C) 100 N
• D) 44 N
• E) 85 N

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