Variation in Pressure with Area
Variation in Pressure with Area
Variation in Pressure With Area : From the formula : following conclusions can be drawn about pressure:
The SI unit of pressure is Pascal (Pa). Increasing the area over which a particular force acts decreases the pressure produced. The converse is also true- decreasing the area over which a particular force acts increases the pressure produced. For example: The pointed end of a high-healed shoe exerts a greater pressure than the flat end, as the force is acting over a smaller at the pointed end. A camel has flat, broad feet that reduce the pressure exerted on the sand. As a result, the camels feet sink very little in the sand, allowing it to move fast.
A 20 pa pressure is applied on the head of a nail placed prependicular to the surface of a wall.If the area of cross-section of the tip of the nail is(1/10) times the area of cross -section of the head, the pressure exerted at the wall is : | |||
| Right Option : C | |||
| View Explanation | |||
Which of the following are correct : (a) The SI unit of pressure is Pascal (Pa). (b) Increasing the area over which a particular force acts decreases the pressure produced. (c) Increasing the area over which a particular force acts increases the pressure produced. | |||
| Right Option : A | |||
| View Explanation | |||
The more the area of contact of a given body the ______________ the pressure it will exert. | |||
| Right Option : B | |||
| View Explanation | |||
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