Physics

An atwood machine consists of a massless string connecting two masses over a massless, frictionless pully. In this case, the masses are 1.70kg and 1.65kg. The system is released from rest with the 1.7kg mass 2.15m above the floor and the 1.65kg mass on the floor. (a) what is the acceleration of the 1.7kg mass? of the 1.65kg mass? (b) what is the speed of the 1.7kg mass just before it hits the floor? (c) how long does it take the 1.7kg mass to reach the floor?
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