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Review Answers: Work and Machines Science
"To master the science of work and machines, you must understand that work is the transfer of energy through motion, calculated as force multiplied by displacement ($W = Fd$). Machines do not reduce the total work required; instead, they make work easier by altering the input force, the distance over which that force is applied, or the direction of the force. Understanding the Scientific Definition of Work In everyday conversation, "work" refers to any task requiring mental or physical effort. However, in the realm of physical science, the definition is far more precise. For work to be performed, a force must be applied to an object, and that..."
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