Term 1 Week 6 2021

  Homework:

• Kinematics worksheet (from previous weeks)
• Projectile Motion worksheet (from previous weeks)
• Vectors worksheet (from last week)
• Force worksheet (from last week)
• Circular Motion Worksheet

Circular Motion

• Velocity is always at a tangent to the circle. Even if the speed remains constant, the velocity is changing because it is accelerating.

vc = 2𝝿r/T

• Centrapetal Acceleration is always toward the centre of the circle.
• ac = mv2/r
• Centapetal Force is the Net Force, and is also always towards the centre of the circle.

Fc = mv2/r

Uniform Circular Motion

Circular Motion

PHet Application on Circular Motion

Derivation of Centripetal Acceleration

Centrapetal vs Centrafugal

Faking Gravity

What is the Coriolis Effect?

Term 1 Week 2021

 Homework:

• Kinematics worksheet (from previous weeks)
• Projectile Motion worksheet (from previous weeks)
• Vectors worksheet (from last week)
• Force worksheet

Forces

Mass on a Slope

Drawing a Free Body Diagram

Net Force - PhET Application - link here

What is a Force?

What Forces are Acting on You?

Best Film on Newton's Third Law Ever

What is Gravity

The Difference Between Mass & Weight

Misconception About Falling Objects

Term 1 Week 4 2020

 Homework:

• Kinematics worksheet (from last week)
• Projectile Motion worksheet (from last week)
• Vectors worksheet

Projectile Motion

See Projectile Motion Videos at the bottom of the Mechanics Webpage - link here

PhET - Projectile Motion  - link here

Projectile Motion - Khan Academy

Horizontal & Vertical Vectors in Projectile Motion

Introduction to Projectile Motion

Vectors

A vector has a magnitude (size) and direction

Vector Addition

• Always add Head to Tail
• It does not matter which order you add vectors

Adding & Subtracting Vectors

What is a Vector?

Term 4 Week 1 2020 Exam Revision

 Exam Revision:

Learn Coach Play Lists

Waves

NCEA Physics L2 Waves: Diffraction

NCEA Physics L2 Waves: Superposition

NCEA Physics L2 Waves: Interference

Mechanics

NCEA Physics L2 Mechanics: General Mechanical Equations

NCEA Physics L2 Mechanics: Vectors

NCEA Physics L2 Mechanics: Projectile Motion

Electricity and Electromagnetism

NCEA Physics L2 Electricity: V I and R - Part 1

NCEA Physics L2 Electricity: V I and R - Part 2

Term 3 Week 7 2020

 Homework:

• Ex 6A, p.188-196, Electric Fields
• Ex 6B, p.200-201, Current & Voltage
• Ex 6C, p.205-214, Series & Parallel Electric Circuits - V = IR
• Ex 6E, p. 222-224, F = Bqv
• Ex 6D, p. 218-219, F = BIL & F = BILsin(θ)




Magnetic Fields






Magnets 

Electromagnet





Electromagnet Used for Scrap Metal Crane



Levitating with Electromagnets


Exploding Cans with Electromagnets


Magnetic Fields




Right Hand Screw Rule





Right Hand Slap Rule



Right Hand Slap (Palm) Rule


Lorentz Force (F = Bqv)


Lorentz Force





Lorentz Force (F = BIL)










V = BvL

Note:
• emf is an old term for voltage and stands for electromotive force
• E is also used by enginers for Voltage (not energy)


D.C. Motor




D.C. Motor How it Works





Brushless D.C. Motor How it Works







Faraday Cage




Tesla Coil & Faraday Cage

Term 3 Week 4 2020

 Homework:

• Ex 6A, p.188-196, Electric Fields
• Ex 6B, p.200-201, Current & Voltage
• Ex 6C, p.205-214, Series & Parallel Electric Circuits - V = IR

Current

Current is the rate of flow of Charge

I = Δq/Δt

Current

Voltage

Voltage (Potential Difference) is the change in energy (work done) to each coulomb of charge between two points on a circuit, or two points across an electric field

Circuit Symbols

Ohm's Law

Ohm's Law PhET application

D.C. Circuit Construction Kit PhET Application

D.C. Circuit Lab PhET Application

Ohm's Law

Series & Parallel Circuits

Series & Parallel Circuits

Electric Power

P = IV

P = I2R  ← using Ohm’s Law V=IR substitution

P = V2/R←using Ohm’s Law I=V/R substitution