9.5 pressure calculations - newera.edu.mn
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9.5 Pressure calculations
9.5 Pressure calculations• Pressure is the quantity that tells us how
concentrated a force is when it presses on an area.
• Here is the equation which is used to calculate
pressure, written in words and in symbols:
Pressure= 𝑓𝑜𝑟𝑐𝑒
𝑎𝑟𝑒𝑎p =
𝐹
𝐴P= pressure
F= force
A= area
Example
Unit of pressure
• The unit of pressure is the Pascal (Pa). 1 Pa is the same as 1N/𝑚2.
• We can write the answer to the example above as:
Pressure=2Pa
Example
Calculating force
• We can rearrange the equation for pressure like this:
force = pressure × area F=P×A
Calculating force
Question 1
Question 2
Question 3
Question 4
Summary
1. Pressure=𝑓𝑜𝑟𝑐𝑒
𝑎𝑟𝑒𝑎2. Force=pressure • area
Homework1. Өөрсдийнхөө гарын алга, хөлний ул, гуталтай хөлний улныхаа
газарт учруулах даралтыг тооцоолох.
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