Laws of Motion
Laws of Motion is one of the core mechanics chapters in JEE Main Physics.
It explains force, inertia, Newton’s laws of motion, friction, tension, pseudo force,
and applications in connected bodies and inclined planes. This chapter forms the foundation
for advanced mechanics and problem-solving.
Topics Covered
- Force and Inertia
- Newton’s First Law of Motion
- Newton’s Second Law of Motion
- Newton’s Third Law of Motion
- Linear Momentum
- Impulse
- Conservation of Momentum
- Types of Friction
- Static and Kinetic Friction
- Motion on Inclined Plane
- Connected Bodies and Pulley Systems
- Pseudo Force in Non-Inertial Frames
Important Formulas
Newton’s Second Law:
F = ma
Linear Momentum:
p = mv
Impulse:
J = FΔt = Δp
Frictional Force:
f = μN
Maximum Static Friction:
fmax = μsN
JEE Main Preparation Tips
- Draw free body diagrams for every numerical problem.
- Master friction and pulley system concepts.
- Understand pseudo force applications carefully.
- Practice force analysis on inclined planes.
- Solve previous year JEE Main questions for speed and accuracy.
