A aeroplane with a mass of 9940 kg completes a vertical loop of radius 155m/s. What normal force does the airplane seat exert on the 92 kg pilot at the top of the loop and at the bottom of the loop?

Answer 1

We need the centripetal acceleration
Ac = v^2/r
you only gave one, the speed I think

at the top
force on seat = m (v^2/r - g)
at the bottom
m (v^2/r + g)