1.

State the formula for pressure, Hence, determine the unit of pressure.

Answer»

Pressure = \(\cfrac{force}{area\,on\,which\,the\,force\,is\,applied}\)

∴ The unit of pressure = \(\cfrac{the\,unit\,of\,force}{the\,unit\,of\,area}\)

The SI unit of force is the newton (N) and that of area is m . Therefore, the SI unit of pressure is N/m2 . It is called the pascal (Pa). 1 Pa = 1 N/m2

[Note: The unit pascal is named in honour of Blaise Pascal (1623-62), French mathematician, physicist and philosopher.]



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