A Mass M = 4

question 59

Multiple Choice

A mass m = 4.0 kg is connected, as shown, by a light cord to a mass M = 6.0 kg, which slides on a smooth horizontal surface. The pulley rotates about a frictionless axle and has a radius R = 0.12 m and a rotatinal inertia I = 0.090 kg⋅m². The cord does not slip on the pulley. What is the magnitude of the acceleration of m? ​ ​

• A)2.4 m/s²
• B)2.8 m/s²
• C)3.2 m/s²
• D)4.2 m/s²
• E)1.7 m/s²

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