7Px 16 Pipiri 20157Px 16 Pipiri 2015What we will do What we will learnExamine energy changes in SHM, generally and particularly (in a perfect world)

What the pattern is.

Extend the above to a real situation

How to handle energy losses because of friction, heat

See what happens to SHM when it is forced

Where the bell curve for “response” comes fromWhat resonance is

A look ahead to the rest of this week.Today: Energy, damping and resonanceTomorrow: Review of Mechanics+HRTFri: Formative Assessment for both classes

How to stay on track for the 20th of November

7 Physics Homework MarkingNo. of marks

What for

1 Having sketches and FULL working

1 Neat presentation and down-page format

1 Answer underlined and units given

1 Self marked and all correct – eventually

1 In on time and signed for (“This is my own work”…….)

Total A mark out of five that will contribute to the “homework” grade in the reports

HW item Skills practiced Rotation: Unit 3Due Fri 28th of May

Torque and rotational inertia

Rotation: Unit 4 and 5Due Thurs 4th of June

More on rotational inertia

Rotation: Unit 6Due Tues 9th of June

Rotational Kinetic Energy

SHM: Unit 1Due Wed 10th of June

Intro to oscillatory and simple harmonic motions

SHM: Units 2 and 3Due Fri 12th of June

The reference circle, phasors, displacement, velocity & accel’n.

SHM: Unit 4Due 18th of June

Natural frequency

SHM: Unit 4Due 19th of June

Phase difference

http://whangareigirlshighphysics.wikispaces.com/NCEA3+Physics