★ Must-know
📐 Formula — Pressure satisfies , where F is force and A is area.
📌 Increasing the area over which a force acts reduces pressure, so broad bag straps, broad bucket handles, and cloth rings under loads make carrying more comfortable.
Further detail
Broad straps spread force; narrow straps concentrate force.
1. Which expression defines pressure when a force acts perpendicular to a surface?
2. What is the correct definition of pressure in physics?
3. A force of 100 N acts perpendicular to an area of 2 m². What pressure does it produce?
What is pressure in terms of force and area?
Pressure is force acting per unit area perpendicular to the surface.
Pressure formula
P = F / A. Force per unit area.
What formula expresses pressure using force and area?
Pressure is given by where F is force and A is area.
Unit of pressure
Newton per square metre (Pa).
Why do a pointed nail and knife edge exert greater pressure?
Their smaller contact areas concentrate the applied force.
Liquid pressure increases with
Height of liquid column.
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