Work, energy and power Topics - IIT JEE Syllabus

1

Work done by a content force and a variable force

2m3/10

📌 Key FormulaW = F·s (constant force), W = ∫ F·dx (variable force)

2

Work-energy theorem

2m2/10

📌 Key FormulaW_net = ΔK

3

Basics of Power

2m2/10

📌 Key FormulaP = W/t = F·v

4

The potential energy of spring conservation of mechanical energy

2m3/10

📌 Key FormulaU_spring = ½kx², E = K + U = constant (if only conservative forces)

5

Conservative and neoconservative forces

2m2/10

📌 Key FormulaWork done by conservative forces is path independent (e.g., gravity), non-conservative (e.g., friction).

6

Elastic and inelastic collisions in one dimensions

2m4/10

📌 Key FormulaElastic: kinetic energy conserved, relative speed of approach = relative speed of separation. Inelastic: kinetic energy not conserved, e = coefficient of restitution.

7

Elastic and inelastic collisions in two dimensions

2m5/10

📌 Key FormulaConservation of momentum in each direction, energy conservation for elastic.