Answer:
The minimum radius of the circle is 1892.75 meters
Step-by-step explanation:
Speed of the jet, v = 1250 km/h = 347.23 m/s
We need to find the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 6.5 g.
The centripetal acceleration is given by :

So, the minimum radius of the circle is 1892.75 meters. Hence, this is the required solution.