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  #1  
Old 11-21-2005, 03:09 PM
tecno_wiz tecno_wiz is offline
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Exclamation Help A Failing Kid

ok i did a good title or so i belive lol
i need a good science fair project but i dont want to copy it i just want enough help to start me off. it has to be a level three or two. manditory.
how does centrifugal force affect the germination of corn seeds
or how about which type of line carries sound waves best?

Last edited by tecno_wiz; 11-22-2005 at 05:49 AM.. Reason: found a topic
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Old 11-21-2005, 03:26 PM
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Talking Hmm

Well, I am not that familiar with centrifugal force, have you tried the encyclopedia?
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Last edited by Mad Scientist; 11-22-2005 at 08:22 AM..
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Old 11-21-2005, 03:32 PM
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Centrifugal force is what keeps you from falling out of a rollar coaster when you go upsidedown! lol!
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Last edited by Mad Scientist; 11-22-2005 at 08:21 AM..
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Old 11-22-2005, 08:18 AM
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Default Centrifugal force

The expression centrifugal force is used to express that if an object is being swung around on a string the object seems to be pulling on the string. In actual fact the person holding the string is doing the pulling. When an object is at speed, then if no force is exerted the object will continue in a straight line. To make the object deviate from that straight line a force must be exerted.

When a stone is being swung around on the end of a rope the tension in the rope is transmitting the force directed to the center that is being exerted by the person swinging the rope. On the other end of the rope the stone is attached and since the stone itself is not attached to anything it cannot resist the force and the direction of motion is bent; towards the center.

With a planet orbiting around a star the same dynamics are at play. Without any force the planet would move in a straight line. The sun's gravity is bending the motion away from that straight line. Because the planet has a lot of velocity perpendicular to the bending force the distance to the sun doesn't decrease.

In general, the force maintaining the circular motion of an object is called the centripetal force.
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Old 11-22-2005, 08:21 AM
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Default Centrifugal force and corn seeds

That's an interesting topic. However, an important question is what benefit would that sort of knowledge bring to mankind?

To do the experiment, of course, you'll need some sort of rotor to keep your corn seeds spinning in a circle. A ceiling fan might do the trick!
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Old 11-22-2005, 04:41 PM
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Default help

well have you tried to do what acids help plants grow or not? Well I did this my freshman yr and i got an A.
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