A 8kg model airplane is banking in order to fly in a circle. The wings are generating a lift force "L" as shown. Assume the plane is maintaining a constant altitude and flying with a constant speed of 17m/s.

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Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.