Parallelogram law of forces –Analytical representation of the resultant of the two forces acting at a point – Triangle Law of forces –– Lami’s Theorem–(λ-μ) Theorem – Related Problems

Components of a force along two given directions – Resultant of coplanar forces acting at a point – Conditions of Equilibrium of any number of forces acting upon a particle. Parallel Forces: Resultant of Polygon of forces like and unlike parallel forces–Conditions of Equilibrium of Three coplanar parallel forces. Moments: Moment of a force – Geometrical Representation – Varigon’s theorem.

Path of a projectile – Greatest Height –Time of Flight – Maximum horizontal range- Range on an Inclined Plane.

Velocity and Acceleration –Equation of Motion – Differential Equation of Central orbits –Perpendicular from the pole on the tangent – Pedal Equation of central orbits & well known Curves-Velocities of central orbits-Two Folded problems

Impulsive Forces: Definitions – Impact of two forces. Collision of bodies: Fundamental Laws of impact –Newton’s Experimental Laws-Principle of Conservation of Momentum –Impact of smooth sphere on a fixed smooth plane- Direct& oblique Impact of two smooth spheres –Loss of kinetic energy due to direct and oblique impact of two smooth spheres