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I will assume that you use the metric system consistently in this problem, so 5 ton means 5000 kilograms of mass.
To find the centripetal acceleration, use the formula a = ,
where v is the linear velocity (in m/s) and r is the radius of the circle (in meters).
To find the net force, multiply the mass of 5000 kg by the centripetal acceleration.
You will get the force in newtons.
If you need an authoritative source, look into this Wikipedia article
https://en.wikipedia.org/wiki/Circular_motion#:~:text=Consider%20a%20body%20of%20one,second%2C%20which%20is%20one%20newton.