A 60-kg pilot flies ajet in a half vertical loop of 1200-mradius so that the speed of the aircraftdecreases at a constant rate. The aircrafthas a speed of 560 km/h at A, andthe pilotexperiences weightlessness at point C (i. e., the normalforce fromthe seat bottom is zero). Find:(a)thedeceleration of the aircraft;(b) the force exerted on the pilotby the seatat point B; (c) direction of theforcewith the horizontal axis.