This is a problem that involves the application of Newton's 2nd law of motion. Two masses, one 4.0 kg and the other 2.5 kg are connected by a light rope that runs over a pulley. The pulley is frictionless and has negligible mass. Calculate the acceleration of the 4.0 kg mass.

Two masses and a pulley: Application of Newton's 2nd Law (PhysCasts)

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Two masses and a pulley: Application of Newton's 2nd Law (PhysCasts)

Two masses and a pulley: Application of Newton's 2nd Law (PhysCasts)