. Measurements and Experimentation
(i) International System of Units, the required
SI units with correct symbols are given at
the end of this syllabus. Other commonly
used system of units - fps and cgs.
(ii) Measurements using common instruments,
Vernier callipers and micro-metre screw
gauge for length, and simple pendulum for
time.
Measurement of length using, Vernier
callipers and micro-metre screw gauge.
Decreasing least-count leads to an increase in
accuracy; least-count (LC) of Vernier
callipers and screw gauge), zero error (basic
idea), (no numerical problems on callipers
and screw gauge), simple pendulum; time
period, frequency, graph of length l versus T2
only; slope of the graph. Formula T=2.π. g
l
[no derivation]. Only simple numerical
problems.
2. Motion in One Dimension
Scalar and vector quantities, distance, speed,
velocity, acceleration; graphs of distance-time and
speed-time; equations of uniformly accelerated
motion with derivations.
Examples of Scalar and vector quantities only,
rest and motion in one dimension; distance and
displacement; speed and velocity; acceleration
and retardation; distance-time and velocity-time
graphs; meaning of slope of the graphs; [Nonuniform acceleration excluded].
Equations to be derived: v = u + at;
S = ut + ½at2; S = ½(u+v)t; v2 = u2 + 2aS.
[Equation for Sn
th is not included].
Simple numerical problems.
3. Laws of Motion
(i) Contact and non-contact forces; cgs & SI units.
Examples of contact forces (frictional force,
normal reaction force, tension force as
applied through strings and force exerted
during collision) and non-contact forces
(gravitational, electric and magnetic).
General properties of non-contact forces. cgs
and SI units of force and their relation with