5 questions0m 0s
Learn the skill
For circular faces A = pi d^2 / 4. For two faces, the common factors cancel: area ratio = (output diameter / input diameter)^2. Use an ideal press with equal-height faces and negligible friction. Use diagrams and calculations only; never build or operate a press for this activity.
Worked example
Diameters of 2 cm and 6 cm give a diameter ratio of 3 and an area ratio of 9. A 7 N input gives 63 N, not 21 N.
