The graph of the applied force and normal force obtained by the student in his experiment is shown in the image attached.
What is applied force and normal force?
Applied force is the external force exerted on an object by an external source, causing its motion or change in position.
Normal force is the force exerted by a surface to support the weight of an object, acting perpendicular to the surface, which is equal to the weight of the object acting downwards.
The graph of the applied force and normal force obtained by the student in his experiment is shown in the image attached with Applied force plotted on horizontal axis and the normal force plotted on vertical axis.