You can balance a seesaw when the torques are balanced in equilibrium â that is, when the sum of the torques is zero and the torques on one side of the fulcrum are equal and opposite to the torques on the other side. For this activity the force is just the weight of the mass given by w = mg.
Likewise, as elevation increases, there is less overlying atmospheric mass, so that atmospheric pressure decreases with increasing elevation.he boiling point is the temperature at which the vapor pressure is equal to the atmospheric pressure around the water. Because of this, the boiling point of water is lower at lower pressure and higher at higher pressure.
In simple words the atmospheric pressure and vapour pressure are constantly pushing one another if atmospheric pressure is greater it will not allow any vapor to to move out of liquid but no sooner vapour pressure and atmospheric pressure are equal the vapour will leave the liquid and enter the atmosphere and hence liquid will start to boil.