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Warm up 5/08/13

Warm up 5/08/13. Question: A machine lets you use 5 N of force to lift an object that weights 10 N – What is its MA? Answer: MA =output force / input force MA = 10 N / 5N = 2 Goal: I will calculate mechanical advantage. Element of the day. 76 – Osmium – Os

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Warm up 5/08/13

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  1. Warm up 5/08/13 • Question: A machine lets you use 5 N of force to lift an object that weights 10 N – What is its MA? • Answer: • MA =output force / input force • MA = 10 N / 5N = 2 • Goal: I will calculate mechanical advantage.

  2. Element of the day • 76 – Osmium – Os • Osmium is the hardest metal element, and is at least as expensive as rhenium. • Osmium and iridium are alloyed in an incredibly hard and wear resistant material that was used in fountain pens and phonograph needles. • Osmium powder reacts with the air to produce a vapor called osmium tetroxide which is deadly. • Osmium is the densest element.

  3. Review Pulley Lab • Notes 9.2 • MA packet. MA problems. • Quiz Corrections • Tonight’s HW • MA problems • Quiz Corrections Agenda / HW

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