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 Chesty, Warik: Engineering problem from my math test for you.
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| Author | Topic: Chesty, Warik: Engineering problem from my math test for you. | ||
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Amateur Bodybuilder 
Posts: 255 |
This problem was on my trig. test yesterday and I couldnt solve it to save my ass! I just want to know how its done so in the future I wont bomb stuff like this. Here it is: Two pulleys are connected by a belt: One pulleys radius is 8 centimeters, the smaller pulleys radius is 5 centimeters, the RPM of the larger pulley is 80 RPM. Find the angular velocity of both pulleys. ------------------     | ||
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Amateur Bodybuilder
Posts: 108 |
No problem, dude... this gives me a chance to test out my scanner... yay! See if you can follow my work: -Warik | ||
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Guru 
Posts: 3438 |
Warik looks right, but I will do the problem tonight or tomorrow and let you know, it will give me a chance to use my scanner some more. | ||
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Amateur Bodybuilder
Posts: 255 |
Damn it, I knew i had to relate the linear velocities to each other because they are the same for both pulleys, I dont hink I was taught to calculate the linear velocity then divide by the circumference of the smaler pulley, but it makes sense. Weve got so many damn formulas for this stuff but I knew it was simpler than I was making it out to be. Thanks man ------------------ | ||
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Guru
Posts: 3438 |
Been a long time for me and physics but warik answer appears correct. You could also solve as simple ratio, 8/5=X/80 (inversely proportional) IE the ratio of radii should be inversely proportional to the angular velocities. | ||
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Pro Bodybuilder 
Posts: 500 |
Ok, I was take a stab at it, but you guys answered already, besides, who cares what I think... ------------------ "Don't eat me! eat Dredd! he works out!" - From Judge Dredd. | ||
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Amateur Bodybuilder
Posts: 55 |
The key is the linear (or tangential) velocities. They must be equal because of the belt velocity is assumed a constant. | ||
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Elite Bodybuilder 
Posts: 997 |
Superdave what part of engineering are you majoring in? Just curious cause my brother is a mechanical engineer. They make some pretty damn good money. ------------------ |
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posted October 20, 2000 02:00 PM
