UNIT-I
Forces acting at a point: Resultant and Component - Lami’s theorem – Resultant of any
number of forces (Analytical and graphical methods) – Parallel forces and moments: - Couples:
Definition - Equivalence of two couples – Resultant of a couple and a force.
Anx.18 D - B.Sc Maths (SDE) 2007-08 Page 7 of 26
UNIT II
Three forces acting on a rigid body - coplanar forces – condition of equilibrium of a
system of coplanar forces – Friction - Equilibrium of a particle on a rough inclined plane under
any force
UNIT III
Centre of gravity by integration – Principle of virtual work for a system of coplanar
forces acting on a body - Kinematics – velocity – motion down a smooth inclined plane - Laws
of motion - potential energy and kinetic energy
UNIT IV
Projectiles : Definition – Two fundamental particles – finding the velocity of the
projectile in magnitude and direction ate the end of line ‘t’ – Motion under the action of central
forces – Introduction – Velocities in a central orbit – Law of the inverse square
UNIT V
Introduction – Simple harmonic motion in a straight line – composition of two simple
harmonic motions of the same period in two perpendicular directions – Introduction – Definition
– Fundamental laws of impact – Oblique impact of two smooth spheres

## BSc Subjects