Questions A disc of metal is melted and a solid sphere is formed. What will happen to the moment of inertia about a vertical axis passing through the centre? What are the unit and dimensions of moment of inertia ? Is it a vector ? Is radius of gyration of the body a … Read more
1. The changes which take place in substances can be broadly classified as physical changes and chemical changes. 2. During a physical change, only the state of the substance changes, but not its chemical composition. Furthermore, a physical change is a temporary change, which can be reversed by changing the physical experimental conditions. At the … Read more
