Work, Energy and Power Concepts

   Monday, July 20, 2020   

Work, Energy and Power Concepts include all Definitions, Laws, Diagrams, Rules, Examples, Results etc.

Page 1

Work | No work done inspite of working hard | Work Done | Work done as dot product of force and displacement | Work done by a constant force | Relationship between units of work | Work done scientifically | Condition for Positive, Negative & Zero work done by a force | Sign convention | Positive and negative work

Page 2

Positive, Negative and Zero work done | Mechanical Energy | Units of Energy | Work Done by Gravity | Work done by frictional force | Work Done by a Variable Force | Application of work-energy theorem for a body under constant external force | Application of work-energy theorem in problems involving gravity | Application of work-energy theorem in problems involving springs | Use of Work Energy Theorem in Body Under Frictional Force

Page 3

Friction and Spring Force acting on a body | Work done on a body by a variable external force | Work Done as area under force Vs displacement graph | Kinetic energy | Experiment to show relation between K.E, mass and velocity | Forms of Kinetic Energy | Calculation of Kinetic Energy | Kinetic Energy and Momentum | Kinetic Energy of a System of Particles | Problem on K.E

Page 4

Calculation of Potential Energy | Relationship between force and potential energy | Problem based on Potential Energy | Work Energy theorem with multiple external forces | Use of Work Energy Theorem in Pulley Mass System | Work done by an impulsive force | Change in energy of finite length objects | Application of work-energy theorem in non-inertial frame of reference | Work done by string | Internal and external forces

Page 5

Conservative and Non-Conservative Forces | Examples of Conservative and Non-Conservative Forces | Conservative forces | Non-conservative forces: | proof- conservative forces are path independent | Properties of Conservative Forces | Work Done by ideal springs | Force exerted by spring(Hooke’s law) | Conservation of total mechanical energy | Conservation of energy when one of the forces is non conservative

Page 6

Problem using conservation of mechanical energy | Conservation of Energy | Conservation of Mechanical Energy for simple pendulum | Application of Conservation of Energy | Mass in motion separates in into multiple masses | Problem on Projectile and its explosion | Problems on motion in two dimension where momentum is conserved in one dimension | Momentum conservation of two blocks attached by a spring | Problems on variable mass system | Application of conservation of energy in spring

Page 7

Springs in series | Force due to single stretched massless spring | Springs in parallel | Conservation of Mechanical Energy for freely falling object |  Average Power | Mathematical Expression of Power | Power in variable mass system | Using power in problems of conservation of energy | Commercial unit of energy