Consider Two Blocks Hung by a Massless String from a Frictionless

question 59

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.What is the speed of m₂ just before it strikes the table 20 meters below its starting point (within 5% accuracy) ?

• A)22 m/s
• B)8.1 m/s
• C)20.m/s
• D)11.m/s
• E)1.7 m/s

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