f6 course mechanics

4
Physical quantities and Units - amount of substance – mole – mol - Light intensity – candela – cd Dimensions – new Concept of homogeneous , testing equation Derivation of Physical Equation Scalars and Vectors – same as F5 Errors – understanding of systematic and random errors Kinematics 4 equations of motion – as in F5 Able to handle differential equation Motion under gravity – as in F5 Graphical skills very important – understand and interprete various graphs Projectile – new - need to spend some time here because 2 dim motion Dynamics As in F5 but must learn to handle differential and integral equations Conservation of momentum – as in F5 Elastic and inelastic collision – misconception in F5 Newton’s law of restitution very useful for elastic collision Rel velocity after collision = -1 ( rel velocity before collision) V1 – v2 = -1 (u1 – u2)

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Physical quantities and Units

Physical quantities and Units amount of substance mole mol

Light intensity candela cd

Dimensions new

Concept of homogeneous , testing equation

Derivation of Physical Equation

Scalars and Vectors same as F5

Errors understanding of systematic and random errors

Kinematics

4 equations of motion as in F5

Able to handle differential equation

Motion under gravity as in F5

Graphical skills very important understand and interprete various graphsProjectile new - need to spend some time here because 2 dim motion

Dynamics

As in F5 but must learn to handle differential and integral equations

Conservation of momentum as in F5

Elastic and inelastic collision misconception in F5

Newtons law of restitution very useful for elastic collision

Rel velocity after collision = -1 ( rel velocity before collision)

V1 v2 = -1 (u1 u2)

Pressure due to jet of liquid

Good example of F = v dm/dt

Pressure due to a stream of elastic particles

Application of newton 2 law

Work Energy Power Generally same as F5

Need to handle integral equation for Work

W = F ds

= area under the graph F s

Work done during gas expansion W = pdV= area under graph PV

Will be useful in topics later

Principle of conservation of Energy ( Potential n Kinetic)

F = - dU / dx

Power = Fv application

Efficiency as in F5

Circular Motion - Completely new topic

Go slow a bit because basic here is need in other topics later on

Vectors skills very important here addition and resolve vectorsMotion of motor cyclist round a curved trackMotion of car round a curved track a bit difficult for student to understand because involve moment of force which will be covered in a later topic (Static)Rotation of Rigid BodyFocus is on application

Also new but best taught with linear motion as parallel in the beginningRotational dynamics I similar to m in linear

Need to memorise various formulas for I ring , disc ,

solid and hollow cylinder, thin rod, solid and hollow sphereRotational KE formula similar to linearTorque usage similar to F in linear

Angular Momentum momentum in linear

StaticTriangle of forces as in F5Centre of gravity and centre of mass stress on calculation

Equilibrium calculation

Friction as in F5

Need to use formula F = RGravitationCan be said a completely new topic even though students

have a bit idea on gravity

Definitions important here given in boldFormulas are important

Application and calculation

Escape velocity and velocity of satelite student always mix up the two

SHMCompletely new topic

Prelude to wave very important here , lots of equation

Focus on calculations

Need to know how to derive SHM equations for the few systems

Exam can as other systems but very similar to those in the book

Relation between SHM and Uniform circular motion very important concept for understanding phase in wave later on.OscillationsVery Small topic focus on damped oscillations

Under damped, critically damped , over damped

Graph emphasizeGraph of forced oscillation and resonance_1181418422.unknown