The deceleration experienced by the gymnast is the 9 times of the acceleration due to gravity.
Now from Newton`s first law, the net force on gymnast,
Here, W is the weight of the gymnast and a is the acceleration experienced by the gymnast ( acceleration due to gravity)
Therefore,
OR
Given and
Substituting these values in above formula and calculate the force exerted by the gymnast,
I totally agree but, in my opinion its because of the government and what the state has control over. Teacher have little control over it.
I think 6.1m i’m not sure sorry if i’m wrong