how is the pressure in a liquid related to depth? how would you demonstrate that
Answers
Answer:
Explanation:
Try to cut an apple with the blunt edge of a knife. Use all the force you can. Is it easy? Now cut it with the sharp edge. Notice how much easier it is, or the fact that you have to use much less force. Find a blunt common pin and try to pierce a sheaf (6 or 7 sheets) of papers with it. Then use a pin with a sharp point to do the same thing. Which is easier?
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Press the blunt end of your pencil on your palm. Now use the same force to press the sharp point on your palm. Which hurts more?
Why is it easier to pierce a sheaf of papers with a sharp pin than with a blunt pin? The tip of the sharp pin has a much smaller area than that of the blunt pin. Suppose the area of the sharp tip is a and that of the blunt tip is 10a. The force (F) you apply is concentrated on the small area of the sharp tip, whereas it gets divided over the larger area of the blunt tip. The force per unit area acting on the paper under the sharp tip is F/a, while that under the blunt tip is F/(10a). Since F/a is ten times greater than F/(10a), the sharp pin passes through the sheaf of papers more easily.
The quantity F/a, or the force per unit area, is called pressure.
Pressure = force/ area
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The SI unit of pressure is Newton’s per square metre (N/m2):
Thus, if a force of 10 N acts on an area of 1 m2, the pressure would be 10 N/m2.
Answer:
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