A mass m_{1} is connected by a light string that passes over a pulley of mass M to a mass m_{2} sliding on a frictionless incline as shown in the figure. There is no slippage between the string and the pulley. The pulley has a radius of 25.0 cm and a moment of inertia of ½ MR^{2}. If m_{1} is 1.00 kg, m_{2} is 2.00 kg, M is 4.00 kg, and the angle is 60.0 degrees, then what is the acceleration of m_{1}?

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0.00 m/s^{2}

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1.20 m/s^{2}

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1.80 m/s^{2}

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2.20 m/s^{2}

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2.80 m/s^{2}