Advertisements
Advertisements
Question
A sharp pin works better than a blunt pin. Explain the reason.
Advertisements
Solution
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
RELATED QUESTIONS
A man exerts same pressure on the ground whether he is standing or he is lying.
The S.I. unit of pressure is pascal.
How is the thrust related to pressure?
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
Give reasons why:
a single nail pricking the body is painful when compared to lying on a bed of nails.
The net force in a particular direction is called ______.
Hot air is ______ dense than ordinary air.
What is the SI unit of pressure?
Assertion (A): A sleeping mattress is so designed that when you lie on it, a large area of your body comes in its contact.
Reason (R): This reduces the pressure on the body and sleeping becomes comfortable.
Pressure is a scalar quantity because ______.
- it is the ratio of force to area and both force and area are vectors.
- it is the ratio of the magnitude of the force to area.
- it is the ratio of the component of the force normal to the area.
- it does not depend on the size of the area chosen.
