Consider Two Blocks Hung by a Massless String from a Frictionless

question 84

Multiple Choice

Consider two blocks hung by a massless string from a frictionless pulley as shown in the figure.The masses of the blocks are m₁=5 kg and m₂=7 kg.The bottoms of the blocks are 20 meters above the top of the table.While m₂ is accelerating downward,what is the magnitude of the tension in the string (within 5% accuracy) ?

• A)57 N
• B)49 N
• C)69 N
• D)80 N
• E)5

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