forces

However, since this force is applied at the feet, far from the center of mass (r > 0), it's going to produce a torque. In this case, the torque would cause a forward angular acceleration, tending to deposit the jumper face down in the sand.So athletes use a few different techniques to counter this rotation. The first is to lean back in the jump—this moves the center of mass closer to the contact point of the foot, thus reducing torque. But it also slows you down. Another is the hang technique, where the jumper extends their arms and legs like…