In: Physics
We have,
Mass of the water
Gravitational acceleration
The weight of the water on the card is
The area of the card is
The pressure is given as:
The air pressure or atmospheric pressure at ground is .
By comparing atmospheric pressure and the pressure of water on the card , since the atmospheric pressure is larger than water pressure on the card, we can say the air pushing harder the water than water pushing on the card.
Water and index of card do not fall down because they are supported by the normal force according to Newton's third law. When objects are in static equilibrium, they do not experience motion (or acceleration) by the force or pressure.
The area of the card is
he pressure is given as:
Therefore, theoretically pressure be held up with a card of (8.5 x 11 in.).
The pressure in the car tire is typically around
The percentage difference between air pressure and pressure in the car tire is calculated as:
Therefore, pressure is higher in car tire than air pressure.