COMEDK UGET Physics - Mechanics and Thermal Physics Syllabus

Physics - Mechanics and Thermal Physics syllabus — full chapter and topic list

Expand any chapter to see its topics and sub-topics. This is the whole examinable outline for Physics - Mechanics and Thermal Physics in COMEDK UGET, not a summary of it.

1. 1

   Units, Measurement and Kinematics

   3 topics

   • Units, Dimensions and Measurement
     • SI units and fundamental quantities
     • Dimensional analysis and applications
     • Significant figures and error analysis
   • Motion in a Straight Line
     • Displacement, velocity and acceleration
     • Equations of uniformly accelerated motion
     • Relative velocity in one dimension
   • Motion in a Plane
     • Vectors and their resolution
     • Projectile motion
     • Uniform circular motion
2. 2

   Laws of Motion and Work-Energy

   3 topics

   • Newton's Laws of Motion
     • Newton's three laws and momentum
     • Friction and its laws
     • Dynamics of circular motion and banking of roads
   • Work, Energy and Power
     • Work-energy theorem
     • Conservation of mechanical energy
     • Elastic and inelastic collisions
   • System of Particles and Rotational Motion
     • Centre of mass and momentum conservation
     • Torque and angular momentum
     • Moment of inertia and theorems
     • Rolling motion
3. 3

   Gravitation and Properties of Matter

   3 topics

   • Gravitation
     • Newton's law of gravitation
     • Gravitational potential energy and escape velocity
     • Kepler's laws and satellite motion
   • Mechanical Properties of Solids
     • Stress, strain and Hooke's law
     • Young's, bulk and shear moduli
     • Elastic potential energy
   • Mechanical Properties of Fluids
     • Pressure and Pascal's law
     • Bernoulli's principle and viscosity
     • Surface tension and capillarity
4. 4

   Heat and Thermodynamics

   3 topics

   • Thermal Properties of Matter
     • Thermal expansion
     • Calorimetry and latent heat
     • Heat transfer: conduction, convection, radiation
   • Thermodynamics
     • Zeroth and first laws
     • Thermodynamic processes
     • Second law and heat engines
     • Carnot cycle and efficiency
   • Kinetic Theory of Gases
     • Ideal gas equation
     • RMS speed and pressure of a gas
     • Degrees of freedom and law of equipartition
5. 5

   Oscillations and Waves

   3 topics

   • Simple Harmonic Motion
     • Displacement, velocity and acceleration in SHM
     • Energy in SHM
     • Simple pendulum and spring oscillations
   • Wave Motion
     • Transverse and longitudinal waves
     • Speed of a travelling wave
     • Principle of superposition
   • Standing Waves and Sound
     • Stationary waves in strings and pipes
     • Beats
     • Doppler effect

Physics - Mechanics and Thermal Physics flashcards for COMEDK UGET

20 of 52 cards from the Physics - Mechanics and Thermal Physics deck — real questions with worked answers.

1. What are the seven SI base quantities and their units?

   Length (metre, m), Mass (kilogram, kg), Time (second, s), Electric current (ampere, A), Thermodynamic temperature (kelvin, K), Amount of substance (mole, mol), and Luminous intensity (candela, cd).

2. What is the dimensional formula of force, work/energy, and power?

   Force = [M L T^-2], Work/Energy = [M L^2 T^-2], Power = [M L^2 T^-3].

3. State the principle of homogeneity of dimensions and one use of it.

   Every term on both sides of a valid physical equation must have the same dimensions. It is used to check the correctness of equations and to derive relationships between physical quantities.

4. How do significant figures behave in multiplication/division versus addition/subtraction?

   In multiplication/division, the result keeps as many significant figures as the quantity with the fewest significant figures. In addition/subtraction, the result keeps as many decimal places as the quantity with the fewest decimal places.

5. Distinguish between accuracy and precision of a measurement.

   Accuracy is how close a measured value is to the true value. Precision is how close repeated measurements are to one another (reproducibility), regardless of the true value.

6. What is the difference between distance and displacement?

   Distance is the total path length travelled (a scalar, always positive). Displacement is the shortest straight-line vector from initial to final position (a vector that can be positive, negative, or zero).

7. State the three equations of motion for uniform acceleration.

   v = u + at; s = ut + (1/2)at^2; v^2 = u^2 + 2as, where u is initial velocity, v final velocity, a acceleration, s displacement, t time.

8. On a velocity-time graph, what do the slope and the area under the curve represent?

   The slope of a v-t graph gives acceleration; the area under the v-t graph gives displacement.

9. For a body thrown vertically upward, what are its velocity and acceleration at the highest point?

   At the highest point the velocity is zero, but the acceleration is still g (≈ 9.8 m/s^2) directed downward.

10. What is relative velocity, and how is it found for two bodies A and B?

    Relative velocity of A with respect to B is the velocity A appears to have as seen from B: v(AB) = v(A) − v(B) (vector subtraction).

11. State the formulas for time of flight, maximum height, and horizontal range of a projectile launched at angle θ with speed u.

    Time of flight T = 2u sinθ / g; Maximum height H = u^2 sin^2θ / (2g); Range R = u^2 sin(2θ) / g.

12. At what projection angle is the horizontal range maximum, and what is that range?

    Range is maximum at θ = 45°, giving R(max) = u^2 / g.

13. What is the path (trajectory) of a projectile, and why?

    The trajectory is a parabola, because horizontal velocity is constant while vertical motion has constant downward acceleration g, giving y as a quadratic function of x.

14. Define centripetal acceleration and give its formula for uniform circular motion.

    Centripetal acceleration is the acceleration directed toward the centre of a circular path, of magnitude a = v^2 / r = ω^2 r, where v is speed, r radius, ω angular velocity.

15. State Newton's three laws of motion.

    1) A body remains at rest or in uniform motion unless acted on by a net external force (law of inertia). 2) F = ma; net force equals rate of change of momentum. 3) Every action has an equal and opposite reaction.

16. Define linear momentum and state the law of conservation of linear momentum.

    Linear momentum p = mv. If no external force acts on a system, its total linear momentum remains constant (the vector sum of momenta before and after an interaction is equal).

17. What is impulse and how does it relate to momentum?

    Impulse = force × time = F·Δt. Impulse equals the change in momentum of a body: F·Δt = Δp = m(v − u).

18. What provides centripetal force for a car turning on a level road, and what is the maximum safe speed?

    Friction between tyres and road provides the centripetal force. Maximum safe speed v(max) = √(μ r g), where μ is the coefficient of friction, r the radius, g gravity.

19. Distinguish static, limiting, and kinetic friction.

    Static friction adjusts to oppose applied force up to a maximum (limiting friction = μs N). Limiting friction is that maximum value just before sliding. Kinetic (sliding) friction (μk N) acts during motion and is usually less than limiting friction.

20. State the work-energy theorem.

    The net work done by all forces on a body equals the change in its kinetic energy: W(net) = ΔKE = (1/2)mv^2 − (1/2)mu^2.

See more Physics - Mechanics and Thermal Physics flashcards →

Planning Physics - Mechanics and Thermal Physics for COMEDK UGET

Physics - Mechanics and Thermal Physics (COMEDK UGET) FAQ