Lever the power out, and the ratio of output to input force is given by the ratio of the distances from the fulcrum to the points of application of these forces. This is known as the "law of the lever." The mechanical advantage of a lever can be determined by considering the balance of moments or torque, "T", about the fulcrum. where F is the input force to the lever and F is the output force. The distances "a" and "b" are the perpendicular distances between the forces and the fulcrum. Since the moments of torque must be balanced, formula_3 .
Front lever lever, straddle front lever, and finally on to the full front lever. At any stage of learning the skill the gymnast may perform pull-ups in the front lever position of their choice. A front lever held with just one arm. The body is often turned sideways in this variation The body is kept horizontal while the gymnast performs a pullup. In this variation the performer leans forward from the lever position, bringing the legs down and arms up until he/she reaches the top of a regular pullup. From here they lean back again, straightening the arms and returning to the