Derivation upthrust
Q1-Why We do not consider mg force while finding the formulae of upthrust?
Q2- what is difference between 1 mole and one gram mole? I find some definations of molar specific heat are using 1mole and some 1 gram mole? Which is correct?
Sol:1- According to Archimedes Principle, a body immersed in a fluid experiences an upward buoyant force equivalent to the weight of the fluid displaced by it.
value of up trust force= weight of liquid displaced by the object which is partially or submerged in to liquid.
= mass of the displaced liquid x Acceleration by gravity (g)
= (volume of displaced liquid by object x density of liquid)
x Acceleration by gravity (g)
Here object is float when gravitational force (mg) < upthrust force
All the conditions of floating and submerged conditions in our videos . Plz follows the videos.
Sol:2- For normal use, There is no difference between i mole and one gram of mole. Because meaning of both words are the number of grams in one mole of a substance.
If you some definition of molar specific heat are using 1 mole and some 1 gram mole both are correct.