A shell, in flight, explodes into four unequal parts. Which of the following is conserved?
Energy is the capacity to do work or produce change. It exists in various forms including kinetic energy thermal energy potential energy and chemical energy. Energy can be transformed from one form to another but cannot be created or destroyed according to the law of conservation of energy. It is essential for all processes in nature.
Chapter 5 of Class 11 Physics delves into Work Energy and Power. It defines work as the product of force and displacement and distinguishes between kinetic and potential energy. The chapter emphasizes the law of conservation of energy which states that energy cannot be created or destroyed and explains power as the rate of doing work in various contexts.
Share
In the case where a shell in flight breaks into four unequal parts, we consider the conservation laws that apply:
1. Momentum: The momentum of the system is conserved in the absence of external forces. Before the explosion, the shell has a certain momentum, and after the explosion, the total momentum of all the parts will equal the initial momentum of the shell.
2. Kinetic Energy: Kinetic energy is not necessarily conserved in explosions or inelastic collisions. When the shell explodes, some of the energy is transformed into other forms (like sound, heat, etc.), so the total kinetic energy after the explosion will not equal the kinetic energy before the explosion.
3. Potential Energy: In this situation, neither potential energy is preserved, particularly when the explosion causes a change in the height of the parts.
Click here for more :
https://www.tiwariacademy.com/ncert-solutions/class-11/physics/chapter-5/