- #1
AZhang
- 14
- 0
Ok, so I'm trying to understand the forces involved in jumping, more specifically, right before a person takes off (as in the part where they press into the ground). I know that the weight force is pushing the person down and that the normal force is bigger than the weight force to create a net force that points upwards. But how can the normal force suddenly become larger? I know that the body is pressing down on the floor, but then wouldn't there be both a weight force and the force of the body pressing down, which means that the normal force and the other two forces cancel out, meaning that there is equilibrium? I'm so confused...