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**1. Homework Statement**

someone is flying a plane and he is being chased and at the bottom of the loop his guages say he is traveling at 180km/h he is sitting on a bathroom scale which says he weighs 4 times what he normally does, what is the radius of the loop in meters?

**2. Homework Equations**

Fc=Fn ?

R=v^2/g

**3. The Attempt at a Solution**

well 180km/h is 50m/s and since he is 4 times as heavy the acceleration due to gravity will be 4 times greater? so i used the formula and it comes out as 63.71 m which seems unbelievable so i figured id ask, probably somthing stupid im doing wrong

thanks