Weegy: Using multiple pulley,s it is possible to C. change both the direction of the effort force and increase the size of the effort force
User: Why could a knife be considered to be a compound machine? A. It can act as both a wedge and a lever at the same time. B. It can act as both a pulley and a wedge at the same time. C. It can act as both an inclined plane and a screw at the same time. D. It can act as both a wedge an an inclined plane at the same time.
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