Advertisements
Advertisements
प्रश्न
A sharp pin works better than a blunt pin. Explain the reason.
Advertisements
उत्तर
A sharp tip is provided at the end of a pin so that pressure (FORCE / AREA) exerted by it is maximum when it is pressed by a given force.
APPEARS IN
संबंधित प्रश्न
Toricelli’s barometer used mercury. Pascal duplicated it using French wine of density 984 kg m–3. Determine the height of the wine column for normal atmospheric pressure.
A man exerts same pressure on the ground whether he is standing or he is lying.
The pressure and thrust are related as
How is the thrust related to pressure?
When does a man exert more pressure on the floor: while standing or while walking?
Calculate the pressure in pascal exerted by a force of 300 N acting normally on an area of 30 cm2.
If someone presses a pointed needle against your skin, you are hurt. But if someone presses a rod against your skin with the same force, you easily tolerate. Explain.
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.
Explain the variation of the pressure exerted by liquid with respect to the following factors.
- Amount of liquid
- Depth
- Shape and size of the container
Scuba divers wear special suits to withstand ______.
