Common Mistakes: Area vs Pressure- class 8

⚠️ Common Mistakes: Area vs Pressure

❌ Mistake 1: Thinking that greater area means more pressure.
Wrong Idea: "Larger the area, greater the pressure applied."

✅ Correction: Pressure is inversely proportional to area. If force is constant, increasing the area reduces the pressure.

Example:
A sharp knife cuts better than a blunt one because the small area increases pressure.

❌ Mistake 2: Using wrong units for area like cm instead of cm².
Wrong: "Area = 4 cm" in the formula.

✅ Correction: Area must always be in **square units** like cm², m². For pressure in Pascals, use area in m².

❌ Mistake 3: Confusing pressure with force.
Wrong Thought: "If pressure is high, the object must be heavy."

✅ Correction: Pressure = Force ÷ Area. Even a light object can cause high pressure if its contact area is very small.

Formula Reminder:
Pressure = Force ÷ Area
Units: Pressure (Pa), Force (N), Area (m²)