Pressure is given by the expression P = F/A. When a man walks, he puts one foot on the ground at a time.
The surface area of one foot is less
, therefore, pressure is more, than while standing as surface area of both feet on the ground is more and hence pressure is less.
Why do standing people exert more pressure on the earth than people lying down?
we exert more pressure while standing because
the surface area of our feet acts directly on the ground while
when we are lying down the surface area increases and our weight on more area than before so less pressure is exerted.
In which case man exerts more pressure on the ground whether he is standing or he is lying?
False
. A man exerts different pressure on the ground whether he is standing or he is lying.
In which situation we exert more pressure on the ground when we stand on one foot or on both the feet justify your answer?
When we stand on one foot because on both feet the
area increases and pressure is inversely proportional to area
. So, pressure decreases on both feet.
When you stand you exert pressure on the ground where do you exert more pressure?
You exert more pressure
on a surface
when standing up. This is because there is less surface area for the weight to spread, therefore ther is more pressure.
What is the atmospheric pressure on human body?
The average human body surface area is 1.73 m2 and the standard atmospheric pressure is
101,325 N/m2
. Hence the total atmospheric force exerted on the average human body would be 1.73 m2 x 101,325 N/m2 = 175,300 N (approx.).
What would happen if there was no pressure?
With no atmospheric pressure,
the boiling point of water would drop significantly from 100°C
. All of the Earth’s water would start boiling away like a forgotten kettle. Not all of it would turn into vapor. Soon we’d reach an equilibrium with enough vapor to prevent the water from boiling.
How can one increase the pressure by exerting the same force?
How can we increase the pressure by exerting same force? Pressure can be
increased by decreasing the area of the surface on which force is to be applied
.
What is difference in pressure exerted on the ground while walking on a single foot and both feet?
Force and Pressure | Short/Long Answer Questions
Pressure is inversely proportional to area. While walking, one foot is in contact with the floor and while standing both feet are on the floor. Therefore
pressure exerted while standing is less than the pressure exerted while walking
.
Solution: Pressure is per unit thrust on a surface, hence
pressure is directly proportional to thrust
. Greater the thrust, greater is the pressure and smaller the thrust, smaller is the pressure.
Who will exert more pressure a boy standing on one leg and another boy standing on two legs?
Pressure is
inversely proportional to area
. So when we stand on two legs, the area becomes larger and the pressure decreases.
On which floor the pressure will be maximum and why?
Explanation: Pressure exerted will be the highest
when the area of application of the force is the least
. Pressure = Force/Area. Among the given figures, it is evident that object A, which is a cone placed with its pointed vertex upside down, has the least area for the action of the force (weight).
In which position would a boy exert the most pressure on the ground?
Pressure is more on
a standing man
than a lying man, because while standing less area is covered by man in comparison to standing, and area is inversely proportional to pressure.
What is the relation between pressure force and area?
Answer: Pressure is
directly proportional to force and inversely proportional to area
.
What are the factors that affect pressure?
Temperature, pressure, volume and the amount of a gas
influence its pressure.
What do you mean by 1 pascal of pressure?
A pascal is a pressure of
one newton per square metre
, or, in SI base units, one kilogram per metre per second squared. … This unit is inconveniently small for many purposes, and the kilopascal (kPa) of 1,000 newtons per square metre is more commonly used.
