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First, letâs define each of these terms: 1  Push System: is a system in which we produce goods based on our best projections of what the market wants. 2  Pull System: is a system in which the production of goods is initiated by the person or organization who consumes that good.
A: A single fixed pulley has a mechanical advantage of 1:1. Mechanical advantage, which is correlated to the usefulness of a machine, refers to the proportion of force output to force input. Force output refers to the force exerted by the machine, while force input refers to the applied force.