Term 2 Week 3 2018

Homework:

• Ex 4J, p. 143-147 Energy, Work, Power
• Ex 4I, p.137-141, Springs
• Ex 4G, p. 125-130, Torque, Static Moments

Torque

𝝉 = F L⦜

𝝉: Torque (Nm)

F: applied Force (N)

L⦜: Length of lever at right angles to the applied force (m)

• Torque (Moments) in Level 2 Physics will involve Static Systems
• Therefore the Torques are balanced and the Forces are balanced - Newton's Laws of Motion apply to turning forces as well as linear forces
• PhET - Torque Balancing Act simulation

Bridge support forces moments

Term 2 Week 2 2018

Homework:

• Ex 4J, p. 143-147 Energy, Work, Power
• Ex 4I, p.137-141, Springs

PhET - Hooke's Law & Springs - HTML

Intro to Springs and Hooke's Law

Potential Energy Stored in a Spring

Gravitational Potential Energy and Kinetic Energy Skate Park PhET Link - HTML

Work

Work is a transformation (change) of energy from one form to another form. Work only occurs when something is done.

• Power is the rate at which energy is transformed
• Power is the rate at which work is done
• Unit of power Watt (W = J/s)

Power vs Energy

Work, Energy & Power

Kinetic Energy & Gravitational Potential Energy

Term 2 Week 1 2018

Homework

• Ex 4J, p. 143-147 Energy, Work, Power

Energy

Energy can never be created

Energy can never be destroyed

Energy can only change its form (Work is done)

Energy has the ability to make something happen, i.e. to do Work

The unit for energy is the Joule (J)

J = Kgm²s-²  in fundamental units

Perpetual Motion Machine?

A Simple Proof of Conservation of Energy

Work, Energy, and Power

Work, Energy and Power Review

Term 1 Week 11 2018

Homework:

• Ex 2C Relationships, p. 19-25

Lab Assessment Phy 2.1 AS 91168
Five periods are allowed for this assessment. This year you will have the option of doing the assessment using google docs and sheets through Hapara.

This is an open book assessment.

All work must be done in class when your Physics Teacher is present.

Term 1 Week 10 2018

Homework:

• Ex 2C Relationships, p. 19-25

Lab Assessment Phy 2.1 AS 91168
Five periods are allowed for this assessment. This year you will have the option of doing the assessment using google docs and sheets through Hapara.

This is an open book assessment.

All work must be done in class when your Physics Teacher is present.

Term 1 Week 9 2018

Homework:

• Ex 4B Forces, p. 94-104
• Ex 4H Circular Motion, p. 132-134
• Ex 4E Kinematics, p. 115-117 (Revision)
• Ex 4D Momentum (Collisions), p. 109-112
• Ex 4C Impulse (Change in Momentum), p. 105-107
• Ex 2C Relationships, p. 19-25

Relationships

Physics Graph Shapes, Relationships, and Equations

Linearizing Graphs in Physics

Video of how to linearize data

Term 1 Week 8 2018

Homework:

• Ex 4B Forces, p. 94-104
• Ex 4H Circular Motion, p. 132-134
• Ex 4E Kinematics, p. 115-117 (Revision)
• Ex 4D Momentum (Collisions), p. 109-112
• Ex 4C Impulse (Change in Momentum), p. 105-107
• Ex 2C Relationships, p. 19-25

Review of Momentum, Impact Force, and Impulse

Impulse

Impulse examples///Homemade Science with Bruce Yeany