Atwood Machine Lab

# Atwood Machine Lab - Ma Atwood Machine Lab M1 2= ` Zabrina...

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M 2 + M 1 a = Atwood Machine Lab ` Zabrina Maultsby Department of Natural Sciences University of Houston Downtown Introduction The purpose of this experiment was to verify the predictions of Newton’s Law F= ma for an Atwood machine, a simple machine constructed by hanging two different masses m1 and m2 from a string passing over pulleys and observing their acceleration. Newton’s Law predicts that the acceleration should be proportional to the difference between the masses and proportional to their sum, M 2 – M 1 ) g where g = 9.8 m/s 2 is the acceleration due to gravity. Background If you try to slide a heavy box resting on the floor, you may find it difficult to get the box moving. Static friction is the force that is acting against the box. If you push harder, this force increases to match the magnitude of your push. There is a limit to the magnitude of static friction, so eventually you may be able to apply a forcelarger than the maximum static force, and the box will move. Once the box starts to slide, you must continue to exert a force to keep the

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Atwood Machine Lab - Ma Atwood Machine Lab M1 2= ` Zabrina...

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