Warm up 5/08/13

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# Warm up 5/08/13 - PowerPoint PPT Presentation

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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Presentation Transcript
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?
• MA =output force / input force
• MA = 10 N / 5N = 2
• Goal: I will calculate mechanical advantage.
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.

Review Pulley Lab

• Notes 9.2
• MA packet. MA problems.
• Quiz Corrections
• Tonight’s HW
• MA problems
• Quiz Corrections