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.
(3) for constant pressure, temperature and density are inversely related (that is, if there are fewer molecules in a given volume, they need to be travelling at a greater average speed to exert the same pressure).Therefore, we can see that any change in any one variable is likely to cause changes in the others. This says that pressure divided by (density multiplied by a constant) equals temperature. 2  In the demijohn experiment, we increase the air pressure and the density. 3  As it turns out, the % increase in pressure is greater than the % increase in density, so the term p/ r R increases.