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A 570-g block on a level track is pulled horizontally by a string that runs over a pulley at the end of the tr?

Dec 19, 2010 by Tanzy | Posted in Physics

A 570-g block on a level track is pulled horizontally by a string that runs over a pulley at the end of the track. Hanging from the pulley is a 157-g brass mass. The coefficient of kinetic friction between the block and the track is 0.23. Find the acceleration

Use free body diagrams

about the block we have T -Ој*m1*g = m1*a or T = m1*a + Ој*m1*g

about the hanging block m2*g - T = m2*a or T = m2*g - m2*a

equating these we get m1*a + Ој*m1*g = m2*g - m2*a

DH | Dec 21, 2010

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