Variation in Pressure with Area
Variation in Pressure with Area
VARIATION IN PRESSURE WITH AREA: From the formula: Pressure = Force/ Area, 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.
Which of the following are correct : (a) The more the area of contact of a given body the lesser the pressure it will exert. (b) The more the force acting on a body, the more the pressure it will exert. (c) The lesser the area of contact of a given body, the more is the pressure exerted by it. | |||
| Right Option : D | |||
| View Explanation | |||
The more the area of contact of a given body the ______________ the pressure it will exert. | |||
| Right Option : B | |||
| View Explanation | |||
Which of the following are correct : (a) The more the force acting on a body, the more the pressure it will exert. (b) The more the force acting on a body, the less the pressure it will exert. | |||
| Right Option : A | |||
| View Explanation | |||
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