Sunday, 24 May 2020

Term 2 Week 7 2020

Homework


  • Ex 4H, p. 160-162, Rotational Motion
  • Ex 4I, p. 167-171, Angular Momentum


  • Radians

    Radian Measure is used so that we can easily calculate an arc length, d (m), given an angle, š›‰ (Rad) and the radius, r (m).

    d = rš›‰

    This in turn allows us to relate velocity, v (ms-1) to angular velocity ⍵ (rads-1), in the same way.

    v = r⍵, 

    also ⍵ = 2š…f

     This also allows us to relate acceleration, a (ms-2), to angular acceleration, Ī± (rads-2), in the same way.

    a = rĪ±

    The rotational kinematics work just like the translational kinematic equations when there is a constant acceleration.


    Rotational Kinematics Review

    Rotational Kinematics



    Rotational Kinematics Physics: Problems, Basic Introduction, Equations & Formulas



    Rotational Motion Physics, Basic Rotational Motion Physics: Introduction, 

    Angular Velocity & Tangential Acceleration




    Rotational Inertia



    Rotational Inertia

    Torque


    Angular Momentum

    Angular Momentum - Sixty Symbols

    Gyroscopic Precession



    Slow Motion Flipping Cat Physics



    The Bizarre Behavior of Rotating Bodies, Explained


    Ellipsoids and the Bizare Behaviour of Rotating Bodies


    Sunday, 10 May 2020

    Term 2 Week 4 2020

    Homework:

    • Ex 4D, p.128-131, Banked Corners (Circular Motion)
    • Ex 4E, p. 138-142, Vertical Circles
    • Ex 4F, p.145-147, Gravity
    • Ex 4G, p.153-156, Circular Motion & Gravity



    Gravitation: The Four Fundamental Forces of Physics



    Introduction to Newton's law of gravitation | Physics | Khan Academy


    Speed of a Satellite in Circular Orbit, Orbital Velocity, Period, Centripetal Force


    Gravity Visualised

    How Do Satellites Get & Stay in Orbit?


    Kepler’s First Law of Motion - Elliptical Orbits 

    Kepler’s Second Law of Motion - Equal Area Equal Time Law


    Kepler's Third Law of Motion - T2 ∝ R3

    Sunday, 3 May 2020

    Term 2 Week 3 2020

    Homework
    • Ex 4D, p.128-131, Banked Corners (Circular Motion)
    • Ex 4E, p. 138-142, Vertical Circles


    Vertical Circular Motion

    Vertical Circular Motion

    Walter Lewin Vertical Circular Motion


    Banked Corners

    Circular Motion - Banked Curves


    Car on a Banked Corner

    Free body diagram sine and cosine components