Equation for optimal box deepness?

[Misty Wolf]

When you jump on a deeper box than the ordinary 20 cm deep box. You can have a bigger pole and sometimes it feel you can jump higher because of that. It would be fun to calculate what the optimal box deepness is.
Is it someone that have an idea how you can calculate the deepness that are optimal for jumping as high as possible?

[VaultPurple]

When you jump on a deeper box than the ordinary 20 cm deep box. You can have a bigger pole and sometimes it feel you can jump higher because of that. It would be fun to calculate what the optimal box deepness is.
Is it someone that have an idea how you can calculate the deepness that are optimal for jumping as high as possible?

The deeper the box the higher you can hold because it is increases the angle with the ground. The same reason taller people can hold higher. So optimal would pretty much be as deep as you can make it with out it being awkward to plant in.

But since the box is required to be the way it is by the rules, making a different one is would not be allowed.

[Misty Wolf]

How much does it do. For example a 50 cm box instead of 20 cm?

[VaultPurple]

How much does it do. For example a 50 cm box instead of 20 cm?

Do not have exact numbers but you can kind of figure out how much by jumping off of a box from a short run. Someone on here once posted that 1 inch of extra height would be 4 more inches of grip height on the pole, and 4 more inches of grip height should get you about an extra 6 inches to your jump. So from 20 to 50 you are adding pretty much a foot of height to the vaulter. Usually if a box is like an inch or so too deep at high schools or something because it is just in the dirt and not concrete, you can usually get an extra grip or two on a little stiffer pole.