The airplane executes the vertical loop defined by r = [810(10) cos 2] m. If the pilot maintains a constant speed v= 120m/s along the

The airplane executes the vertical loop defined by r² = [810(10³) cos 2θ] m². If the pilot maintains a constant speed v= 120m/s along the path, determine the normal force the seat exerts on him at the instant θ = 0°. The pilot has a mass of 75 kg.

0 2: = [810(10) cos 20]m2