Date of event:
August - 2021
Description :
The above activity was done in the class by the Grade 8 students to understand how pressure exerted by liquids can be used in lifting, crushing heavy objects with the smaller force applied as explained below.
WORKING PRINCIPLE:
The science behind hydraulics is called Pascal~s principle. Essentially, because the liquid in the pipe is incompressible, the pressure must stay constant all the way through it, even when you~re pushing it hard at one end or the other. Now pressure is defined as the force acting per unit of area. So if we press down with a small force on a small area, at the narrow end of the tube on the left, there must be a large force acting upward on the larger area piston on the right to keep the pressure equal. That~s how the force becomes magnified.
APPLICATIONS OF HYDRAULIC PRESS: Hydraulic presses are commonly used for forging, clinching, molding, blanking, punching, deep drawing, and metal forming operations.
