DSHS AP1 Physics MathyDo not write on this documentCh 4 ForcesLab #5 Atwood DemonstratorUniformly Accelerated Motion: The Atwood Machine Newton's first law of motion states that objects at rest remain at rest unless an unbalanced force is applied. The second law of motion describes what happens if the resultant force is different from zero. If the acceleration is constant, the body is said to be moving with uniformlyaccelerated motion. The purposeof this experiment is to measurethe acceleration of a given mass produced by a given force and compare itwith that calculatedfrom Newton's second law of motion. The Atwoodmachine consists of two weights connected by a light, flexible string which passes over a light pulley. The pulley should be nearly frictionless. The machine is used to measure the acceleration produced by an arbitrarily chosen force acting on a given mass. Using F = ma, the acceleration can be determined.