A potter places a lump of soft clay on a rotating potter’s wheel and then presses it gently with his hands to shape it.
(i) Identify whether the force applied by the potter’s hands is a push or a pull. Give a reason for your answer.
(ii) Explain clearly which property of the clay—its state of motion or its shape—is mainly affected during the shaping process and why.
(iii) If the potter stops the wheel but continues to press the clay, describe the changes, if any, that will now occur in (a) the motion of the clay and (b) its shape. Give reasons for your answers.