Given: F = 300 N; `"A" = 30 " cm"^2 = 30/(100xx100)"m" ^2 = 30xx10^-4 "m"^2`
To Find: Pressure
`therefore "P" = "F"/"A"`
`= 300/(30/(100xx100)`
` = (300xx100xx100)/30`
= 100000
= 105 Pa
Calculate the pressure in pascal exerted by a force of 300 N acting normally on an area of 30 cm2.
Given: F = 300 N; `"A" = 30 " cm"^2 = 30/(100xx100)"m" ^2 = 30xx10^-4 "m"^2`
To Find: Pressure
`therefore "P" = "F"/"A"`
`= 300/(30/(100xx100)`
` = (300xx100xx100)/30`
= 100000
= 105 Pa
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Multiple Choice Question.
A hydraulic lift is designed to lift heavy objects of maximum mass 2000 kg. The area of cross-section of piston carrying the load is 2.25 × 10-2 m2. What is the maximum pressure the smaller piston would have to bear?
A brick is kept in three different ways on a table as shown in the following figure. The pressure exerted by the brick on the table will be
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| A | B | C |
Pressure is directly proportional to the area of contact.
Assertion: The pressure at the bottom of the sea is lesser than that near the surface.
Reason: The pressure exerted by a liquid depends upon the depth of the liquid and density of the liquid.
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