What keeps our solar system together? What keeps a galaxy together? What makes things fall down on earth? The answer to all of them is gravity. In this lesson we will explore one single law, that is obeyed by everything in the universe.
As submarines go deeper in the water they get crushed by water pressure. It's the same pressure that lets ship float. In this lesson, we will explore this pressure in liquids and learn about Archimedes principle of floatation