A Mass M₂ = 1

question 32

Multiple Choice

A mass m₂ = 1.5 kg rests on a horizontal table.The coefficients of friction between m₂ and the table are µ_s = 0.3 and µ_k = 0.25.The mass m₂ is attached by strings to masses m₁ = 2.5 kg and m₃ = 4.5 kg as shown.Masses m₁ and m₃ hang freely.The system is initially held at rest.After it is released,the acceleration of m₂ is approximately

• A)1.9 m/s²
• B)2.4 m/s²
• C)3.0 m/s²
• D)zero
• E)13 m/s²

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Balance Sheet

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