Hyperloop: Suspension forces

The Hyperloop is a hypothetical new fast transport system between cities, which works by launching pods that carry people through a very low air pressure tunnel. The Hyperloop reduces friction between the pods and the tunnel by supporting the pod on a cushion of air. If the mass of the Hyperloop pod is $$3100~\mbox{kg}$$, what force in N must be exerted on the pod by the air cushion to keep it suspended?

Details and assumptions

• The acceleration of gravity is $$-9.8~\mbox{m/s}^2$$.
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