1. The problem statement, all variables and given/known data Snoopy is flying his vintage warplane in a "loop de loop" path being chased by the Red Baron. His instruments tell him the plane is level (at the bottom of the loop) and travelling at 180 km/hr. He is sitting on a set of bathroom scales that him he weighs four times what he normally does. What is the radius of the loop in meters? 2. Relevant equations Fc=mv2/R ac=v2/R 3. The attempt at a solution I am completely lost with this problem but this is what I attempted... I started by converting 180km/hr into m/s and came up with 648 000 000m/s. Then I used this value and plugged it into the centripetal acceleration equation and used ac=9.8m/s2 and then solved for R= 4.28*1016m I know this must be the wrong answer but I am very lost as to what I should do or even how I should be looking at this problem... If anyone could help me out that would be greatly appreciated! Thank you so much in advance!