An aircraft loops the loop of radius R=500 mR=500 \mathrm{~m}R=500 m with a constant velocity v=v=v= =360 km=360 \mathrm{~km}=360 km per hour. Find the weight of the flyer of mass m=70 kgm=70 \mathrm{~kg}m=70 kg in the lower, upper. and middle points of the loop.