Block and tackle
Phelan, Richard M. Department of Mechanical Systems and Design, Cornell University, Ithaca, New York.
- Additional Reading
Combination of a rope or other flexible material and independently rotating frictionless pulleys; the pulleys are grooved or flat wheels used to change the direction of motion or application of force of the flexible member (rope or chain) that runs on the pulleys. As in a lever, the summation of torques about the axis of rotation of the pulley equals zero for static equilibrium. Tension T in the rope is the same on both sides of the pulley. See also: Lever
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