The tip of pin is
sharp to have ease in penetrating it
. It is made thiner and sharper so that it acquire less area so that amount of force is required is minimised. … Hence lesser the area lesser the force required for penetration.
Why do drawing pins have a round end to push whereas the other end is sharp?
Why do drawing pins have a round end to push whereas the other end is sharp? Answer: In one
end of drawing pin is kept wide so as to put force on large area and the other end is very sharp
so as to put the effect of pressure on a very small area. This helps the pin to penetrate the wooden board easily.
Why it is easier to push a sharp tipped pin than a blunt tipped pin into a board?
When a given force is applied, a
sharp tip pin covers lesser area and exerts more pressure as P = F A P=frac
{F}{A} P=AF. Therefore a sharp pin works better than a blunt pin.
Why is the drawing pin kept broad at the thumb side but very sharp at the pin side?
Explanation: In a drawing pin, one end is kept wide while the other end is very sharp . It is because while
piercing a drawing pin, one has to apply some external force on the up side of the pin so that it gets pierced
.
Why safety pins and drawing pins have narrow and sharp tips?
Ans: Safety pins & drawing pins have narrow & sharp tips
because the smaller surface area of the tip causes a high pressure and therefore
, makes it easier for these objects to pierce through a given material.
Why drawing pins have flattened heads?
Answer: Domed or gripped heads are sometimes preferred over flat heads as dropped flat-headed pins may easily point upward, posing a hazard. Drawing pins also
pose a hazard of ingestion and choking
, where they may do serious harm.
Why is a drawing pin board at one end and pointed at the other?
Grade 7. In a drawing pin,
one end is kept wide while the other end is very sharp
. It is because while piercing a drawing pin, one has to apply some external force on the up side of the pin so that it gets pierced. In order to apply more force the head has to be wide.
Why is it easier to hammer a sharp pin as compared to a blunt pin?
Answer: It is easier to hammer a sharp nail than a blunt one into the wood. This is because
blunt nail occupies more area than sharped nail
. As pressure exerted it inversely proportional to area lesser the the area, the pressure will be more.So the sharp will exert more pressure as it occupies less area.
Why does a sharp nail easily penetrate wood but not a blunt nail?
We know that Pressure is inversely proportional to area. … Where
as a bluntnail has more area than a sharpnail and the pressure exerted by the bluntnail will be less as compared to that of a sharp nail
. Therefore it becomes easy to penetratea sharp nail easily through wood than a blunt nail.
Why is it easier to hammer a sharp nail into wood compared to a blunt one?
@ruchi: The reason
is pressure
. A blunt nail has more surface area than a sharp nail, so the pressure applied is less.
Why does head of a thumbtack board and the head of a pin is short?
The head of the thumbtack is broad while the head of a pin is
small because we don’t want the thumbtack to pierce in our fingers
as it is meant to be applied by our thumb.
Why are drawing pins so easy to push into a surface?
Drawing pins
have a large round end for your thumb to push
. The round end has a large area, so it exerts a low pressure to your thumb. The sharp end has a very small area. The same pushing force produces a high pressure there, so it pushes into the notice board.
How can a force in small area be more effective?
Answer: With less surface area, the force exerted on a body becomes larger. Ex. … You will feel that the sharp end exerts more force as it will hurt more this is because
less surface area = more force
.
Why do pins have sharp point?
Why do we make needles sharp and pointed? When a needle is pushed against a surface,
the end of pin exerts some pressure on the surface
. A sharp pointed end has a very small surface area to be in contact with, due to which pressure becomes very large at that point. This helps in easier working with needle.
Why the edge of drawing pin is sharp and pointed?
Answer: one end of a drawing pin is sharp
in order to increase pressure on the surface where the pin is to be inserted
. So, that it easily pierce because smaller the area more the pressure will be exerted .
Why pins have sharp tip?
Since the pressure is inversely proportional to the area of contact, so the pressure will increase. Thus, for
increasing the pressure for a given force applied by us to drive the pin
inside the sheet or paper, the tip of the all-pin is made sharp.
