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This Concept Map, created with IHMC CmapTools, has information related to: PHYSICS YEAH, Machine ???? Compound Machines, Watt or Joules per second, Power Calculated by P=W/t, A device that multiplies forces or changes the direction of a force type Pulley, sloping surface used to raise objects the equation is MA=l/h, Machine is A device that multiplies forces or changes the direction of a force, N*m or Joules, Joules per second or J/s, W=Fd The units are N*m, Pulley is a grooved wheel with a rope running along the groove, What do simple machines do and how to they do it? Can be explained using Power, P=W/t The units are Watt, Inclined Plane is sloping surface used to raise objects, What do simple machines do and how to they do it? Can be explained using Work, Efficiency is How much of the work you put in actually comes out as useful work(energy)., Work Calculated by W=Fd, Compound Machines is A machine made up of more than one simple machine