![Diagram showing how standing on tip toes is a Class 2 lever.](http://static.sciencelearn.org.nz/images/images/000/002/375/full/04_04_01_02_dgTip-Toe-P52_v2.jpg?1674168091)
Different classes of levers are identified by the way the joint and muscles attached to the bone are arranged.
For the Class 2 lever the load is between the pivot and the effort (like a wheelbarrow). The effort force needed is less than the load force, so there is a mechanical advantage.
Standing on tip toes is a Class 2 lever. The pivot is at your toe joints and your foot acts as a lever arm. Your calf muscles and achilles tendon provide the effort when the calf muscle contracts. The load is your body weight and is lifted by the effort (muscle contraction).