Lever force F at a point "A" located by the coordinate vector r on the bar. The lever then exerts an output force F at the point "B" located by r. The rotation of the lever about the fulcrum "P" is defined by the rotation angle "θ" in radians. Let the coordinate vector of the point "P" that defines the fulcrum be r, and introduce the lengths which are the distances from the fulcrum to the input point "A" and to the output point "B", respectively. Now introduce the unit vectors e and e from the fulcrum to the point "A"
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