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7Px 16 Pipiri 2015 What we will do What we will learn Examine energy changes in SHM, generally and particularly (in a perfect world) What the pattern is.

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Presentation on theme: "7Px 16 Pipiri 2015 What we will do What we will learn Examine energy changes in SHM, generally and particularly (in a perfect world) What the pattern is."— Presentation transcript:

1 7Px 16 Pipiri 2015 What we will do What we will learn Examine 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 from What resonance is A look ahead to the rest of this week. Today: Energy, damping and resonance Tomorrow: Review of Mechanics+HRT Fri: Formative Assessment for both classes How to stay on track for the 20 th of November

2 No. 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

3 HW item Skills practiced Rotation: Unit 3 Due Fri 28 th of May Torque and rotational inertia Rotation: Unit 4 and 5 Due Thurs 4 th of June More on rotational inertia Rotation: Unit 6 Due Tues 9 th of June Rotational Kinetic Energy SHM: Unit 1 Due Wed 10 th of June Intro to oscillatory and simple harmonic motions SHM: Units 2 and 3 Due Fri 12 th of June The reference circle, phasors, displacement, velocity & accel’n. SHM: Unit 4 Due 18 th of June Natural frequency SHM: Unit 4 Due 19 th of June Phase difference

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

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