NCERT Class 11 Physics Formula Sheet - Chapters 4-6
Chapter 4: Motion in a Plane
This chapter extends kinematics to two dimensions, covering vectors, projectile motion, and uniform circular motion.
📍 Vector Operations
Where Ax, Ay are components, θ is the angle between vectors.
🚀 Projectile Motion
Where u = initial velocity, θ = angle of projection, g = acceleration due to gravity.
⚙️ Uniform Circular Motion
Where v = linear velocity, r = radius, m = mass.
Chapter 5: Laws of Motion
This chapter introduces Newton’s laws, friction, and dynamics of circular motion.
📜 Newton’s Laws of Motion
Where F = net force, m = mass, a = acceleration.
🚪 Friction
Where μs, μk = coefficients of static and kinetic friction, N = normal force.
🔄 Dynamics of Circular Motion
Centripetal force is provided by tension, gravity, or friction in circular motion.
Chapter 6: Work, Energy, and Power
This chapter covers work done by forces, types of energy, and power calculations.
🔧 Work
Where F = force, d = displacement, θ = angle between force and displacement.
⚡ Energy
Where m = mass, v = velocity, g = acceleration due to gravity, h = height.
🔄 Work-Energy Theorem
💡 Conservation of Mechanical Energy
🔌 Power
🤝 Collisions
Where e = 1 for elastic, e = 0 for perfectly inelastic collisions.
- Work is zero if force and displacement are perpendicular (θ = 90°).
- Mechanical energy is conserved only when no non-conservative forces (e.g., friction) act.
- Use conservation of momentum in collision problems.
Class 11 Physics Formula Sheet NCERT Physics Chapters 4-6 Formulas Motion in a Plane Formulas Laws of Motion Class 11 Work Energy Power Formulas Projectile Motion Equations Newton’s Laws Formulas JEE NEET Physics Formulas CBSE Physics Formula Sheet Work Energy Theorem