Two Blocks,joined by a String,have Masses of 3

question 44

Multiple Choice

Two blocks,joined by a string,have masses of 3.0 and 4.0 kg.They rest on a frictionless horizontal surface.A second string,attached only to the 4.0-kg block,has horizontal force = 40 N applied to it.Both blocks accelerate.Find the tension in the string between the blocks.

• A)23 N
• B)5.7 N
• C)17 N
• D)93 N
• E)120 N

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