A Mass of 355 G Hangs from One End of a String

question 90

Multiple Choice

A mass of 355 g hangs from one end of a string that goes over a pulley with a moment of inertia of 0.0125 kg∙m² and a radius of 15.0 cm. A mass of 680 g hangs from the other end. When the masses are released, the larger mass accelerates downward, the lighter mass accelerates upward, and the pulley turns without the string slipping on the pulley. What is the acceleration of the masses?

• A) 2.00 m/s²
• B) 3.82 m/s²
• C) 2.87 m/s²
• D) 5.74 m/s²
• E) 7.78 m/s²

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