Differential pulley were. Next, the downward force acting on the lower pulley equal the upward forces acting on it, so Additionally, there is no net torque or moment around the compound pulley, so the clockwise torque is equal to the anticlockwise torque: Substituting "F" and "F" from the above equations, Rearranging gives As "F" = , Finally, the mechanical advantage, = or . Differential pulley A differential pulley, also called "Weston differential pulley", sometimes "chain hoist" or colloquially "chain fall", is used to manually lift very heavy objects like car engines. It is operated by pulling upon the slack section of a
Skip a Rope Skip a Rope "Skip a Rope' is a 1967 single by Henson Cargill. The single was Cargill's debut release on the country charts and also his most successful single. "Skip a Rope" was Cargill's sole No. 1 on the country charts, spending five weeks at the top and a total of 16 weeks on the chart. "Skip a Rope" crossed over to the Top 40, peaking at No. 25. The song asked listeners to pay attention to what children would say as they played. It touched on, among other things, verbal spousal abuse, tax evasion and racism, and at the