Unit 2 : Mechanics
The unit Mechanics has got 110 periods.
- Kinematics (15 periods)
- Relative motion
- Motion in the same direction
- Motion in opposite directions
- Rectilinear motion under constant acceleration
- Graphs of motion
- s-t graphs
- v-t graphs
- Equations of motion
- Motion on a straight line
- Projectile motion under gravity
- Resultant of forces and torque (15 periods)
- Resultant of forces
- Resultant of two forces
- Resultant of a system of coplanar forces
- Moment of a force (torque)
- Moment of a force about a point
- Moment of a couple (of forces)
- Resultant of parallel forces and the line of action (parallel forces in the same direction)
- Center of gravity of a body (using the resultant of parallel forces)
- Center of gravity of regular shaped bodies
- Center of gravity of regular shaped compound bodies
- Center of mass
- Determination of weight of a body using the parallelogram of forces
- Force and motion (20 periods)
- Mass
- Inertial mass
- Gravitational mass
- Inertial and non-inertial frames
- Newton's first law of motion
- Momentum
- Newton's second law of motion
- Obtaining F = ma
- Defining the unit 'newton'
- Impulse and impulsive forces
- Principle of conservation of linear momentum
- Newton's third law of motion
- Applications of Newton's laws
- Self adjusting forces
- Tension
- Thrust / compression
- Frictional forces
- Static friction
- Limiting friction
- Dynamic friction
- Free body diagrams
- Equilibrium (10 periods)
- Conditions for equilibrium
- Principle of moments
- Equilibrium under two forces
- Equilibrium of coplanar forces
- Three non parallel forces
- Tree parallel forces
- Theorem of triangle of forces
- Polygon of forces
- States of equilibrium
- Stable
- Unstable
- Neutral
- Determination of weight of a body using the principle of moments
- Work, energy and power (15 periods)
- Work
- Work done by force in transitional motion
- Mechanical energy
- Kinetic energy
- Transitional kinetic energy
- Potential energy
- Gravitational potential energy
- Elastic potential energy
- Power and efficiency
- Principle of conservation of energy
- Principle of conservation of mechanical energy
- Work-energy principle
- Rotational motion and circular motion (15 periods)
- Rotational motion
- Angular displacement
- Angular velocity
- Frequency of rotation
- Angular acceleration
- Equations of rotational motion under uniform angular acceleration
- Moment of inertia
- Thin uniform rod
- Thin uniform ring
- Uniform circular disk and cylinder
- Uniform sphere
- Angular momentum
- Torque
- Relationship between torque, moment of inertia and angular acceleration
- Principle of conservation of angular momentum
- Work done in rotational motion
- Rotational kinetic energy
- Analogy between linear motion and rotational motion
- Uniform circular motion with uniform angular velocity in a horizontal plane
- Frequency
- Period
- Tangential velocity
- Centripetal acceleration
- Centripetal force
- Hydrostatics (12 periods)
- Hydrostatic pressure
- Comparing the relative density of liquids
- Using U-tube
- Using Hare's apparatus
- Transmissibility of pressure
- Pascal's principle and its applications
- Upthrust
- Archimedes' principle
- Verification theoretically and practically
- Floatation
- Principle of floatation
- Comparing the density of liquids using Hydrometer
- Fluid-dynamics (08 periods)
- Streamline flow and turbulent flow
- Equation of continuity for a steady, stream line flow
- Bernoulli's principle (derivation not necessary)
- Application of Bernoulli's principle
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