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Two masses m1 = 5 kg and m2 = 4 kg tie...

Two masses `m_1` = 5 kg and `m_2` = 4 kg tied to a string are hanging over a light frictionless pulley. What is the acceleration of each mass when left free to move? `(g =9.8ms^(2))`

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`a = (m_1 - m_2)/(m_1 + m_2) xx g = (5-4)/(5 +4) xx 10 = 1/9 xx 10 = 1.1 ms^(-2)`
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