A 50 kg sphere is resting on a smooth horizontal surface. Plot the variation of normal force exerted on the sphere by the surface for a variation of the applied force F from 0 kN to 1 kN. Can you identify the maximum value of the applied force that will maintain the contact between the sphere and surface from your plot.

A 50 kg sphere is resting on a smooth horizontal surface. Plot the variation of normal force exerted on the sphere by the surface for a variation of the applied force F from 0 kN to 1 kN. Can you identify the maximum value of the applied force that will maintain the contact between the sphere and surface from your plot.