Chapter 05 JEE: Very High Weightage
Laws of Motion
Newton's three laws, free body diagrams, friction, pseudo forces, and pulley systems. One of the most important chapters for both boards and JEE.
Key Concepts in this Chapter
✓ Newton's First Law — Law of Inertia
✓ Newton's Second Law — F = ma
✓ Newton's Third Law — Action-Reaction pairs
✓ Free Body Diagrams (FBD)
✓ Static and Kinetic Friction
✓ Angle of Friction and Repose
✓ Pseudo Force in Non-Inertial Frames
✓ Pulley and Connected Body Problems
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JEE Insight
NLM has appeared in every JEE Mains paper for the last 8 years. Pseudo force problems and pulley systems are the most common question types. Nail the FBD technique and 60% of NLM problems become trivial.
NCERT Exercises
Exercise 3.1
Basic application of Newton's laws — single body problems.
Exercise 3.2
Connected bodies, Atwood machine, and pulley systems.
Exercise 3.3
Friction — static, kinetic, angle of repose.
Exercise 3.4
Circular motion and pseudo forces in non-inertial frames.
Exercise 3.5
Mixed problems — multi-body systems with friction.
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