Week 6 Term 2 2026 Torque, Roatational Interia, & Rotational Kinetic Energy

  Homework:

C.O.M. & 2D momentum

• Ex 4A, p.100-102, C.O.M.
• Ex 4B, p.108-112, Momentum & C.O.M. in 1D
• Ex 4C, p.116-122, Momentum & C.O.M. in 2D
• Act 7A, p.87-88 Motion, Force and Energy
• Act 7B, p.91-92 Impulse
• Act 7C, p.95-96 Conservation of Momentum
• Act 7D, p.100-101 C.O.M.

Circular Motion

• Act 8A, p.120-121 Horizontal Circles and Banked Corners
• Act 8B, p.124-125 Vertical Circles
• Act 8C, p.129 Sattelites
• 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 Satallites

Rotational Motion

• Act 9A, p. 139-140, Angular Motion
• Act 9B, p. 144-145, Torque - Rotational Inertia
• Act 9C, p.149-150, Angular Momentum
• Act 9D, p.153-154 Rotational Kinetic Energy
• Ex 4H, p.160-162, Rotational Kinematics
• Ex 4I, P.167-171, Rotational Force & Momentum
• Ex 4J, p.175-177, Rotational Kinetic Energy

Rotational Inertia

Rotational Inertia

Torque

Angular Momentum

Angular Momentum - Sixty Symbols

Gyroscopic Precession

Precession of Earth

Slow Motion Flipping Cat Physics

Counter Steering Physics

The Bizarre Behavior of Rotating Bodies, Explained

Ellipzoids and the Bizarre Behavior of Rotating Bodies

Week 5 Term 2 2026 Rotational Motion (Kinematics)

 Homework:

C.O.M. & 2D momentum

• Ex 4A, p.100-102, C.O.M.
• Ex 4B, p.108-112, Momentum & C.O.M. in 1D
• Ex 4C, p.116-122, Momentum & C.O.M. in 2D
• Act 7A, p.87-88 Motion, Force and Energy
• Act 7B, p.91-92 Impulse
• Act 7C, p.95-96 Conservation of Momentum
• Act 7D, p.100-101 C.O.M.

Circular Motion

• Act 8A, p.120-121 Horizontal Circles and Banked Corners
• Act 8B, p.124-125 Vertical Circles
• Act 8C, p.129 Sattelites
• 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 Satallites

Rotational Motion

• Act 9A, p. 128-129, Angular Motion
• Ex 4H, p.160-162, Rotational Kinematics

Radians

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

d = r𝛉

This in turn allows us to relate velocity, v (ms-1) to angular velocity ⍵ (rads-1), in the same way. Note that Angular Velocity may also be called Angular Frequency.

v = r⍵, 

also ⍵ = 2𝝅f

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

a = rα

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 Kinematics Demonstrated

Rotational Kinematics: The Language of Circular Motion

Week 2 Term 2 2026 Circular Motion

• Homework:

  C.O.M. & 2D momentum

  • Ex 4A, p.100-102, C.O.M.
  • Ex 4B, p.108-112, Momentum & C.O.M. in 1D
  • Ex 4C, p.116-122, Momentum & C.O.M. in 2D
  • Act 7A, p.87-88 Motion, Force and Energy
  • Act 7B, p.91-92 Impulse
  • Act 7C, p.95-96 Conservation of Momentum
  • Act 7D, p.100-101 C.O.M.
  
  
  Circular Motion

  • Act 8A, p.120-121 Horizontal Circles and Banked Corners
  • Act 8B, p.124-125 Vertical Circles
  • Act 8C, p.129 Sattelites
  • 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 Satallites

  
  

Banked Corners

Circular Motion - Banked Curves

Car on a Banked Corner

Free body diagram sine and cosine components

Vertical Circular Loop Model - app

Vertical Circular Motion

    

Vertical Circular Motion

PhET - Gravity Force Lab

PhET - Gravity & Orbits

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

The Only Video Needed to Understand Orbital Mechanics

Can We Create Artificial Gravity?

The artificial gravity lab

Centrifugal Force Does NOT Exist!!

The Coriolis Effect

Centripetal vs Centrifugal

The Most Mind-Blowing Aspect of Circular Motion

Newton’s three-body problem explained - Fabio Pacucci

Week 1 Term 2 2026 - C.O.M. and 2D Momentum

  Homework:

• Ex 4A, p.100-102, C.O.M.
• Ex 4B, p.108-112, Momentum & C.O.M. in 1D
• Ex 4C, p.116-122, Momentum & C.O.M. in 2D
• Act 7A, p.87-88 Motion, Force and Energy
• Act 7B, p.91-92 Impulse
• Act 7C, p.95-96 Conservation of Momentum
• Act 7D, p.100-101 C.O.M.

Centre of Mass (C.O.M.)

Center of Mass - Science Theater 29

Center of Mass

PhET - Collision Lab - Momentum & C.O.M.

Centre of Mass + Momentum

Collision and C.O.M.

Momentum Collision in 2 Dimensions

Momentum in 2D Explained Graphically

Video 1: Introduction

NCEA L3 Physics. Mechanics: 2D Collisions. 

Video 2: Momentum Vectors

NCEA L3 Physics. Mechanics: 2D Collisions. 

Video 3: Solving Problems

NCEA L3 Physics. Mechanics: 2D Collisions. 

Video 4: Centre of Mass

NCEA L3 Physics. Mechanics: 2D Collisions. 

Video 5: Centre of Mass calculations using Ratio

NCEA L3 Physics. Mechanics: 2D Collisions. 

Video 6: Centre of Mass calculations using formula

NCEA L3 Physics. Mechanics: 2D Collisions. 

Video 7: Centre of Mass in collisions

NCEA L3 Physics. Mechanics: 2D Collisions. 

Video 8: NCEA Exam Problem

NCEA L3 Physics. Mechanics: 2D Collisions. 

 

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