Scioly.org

Okay thanks. I never heard about the spring being part of the mass before. Yeah I guess the spring is rising but the rules say any part that decreases in gravitational potential energy is part of mass so wouldn't the spring technically be increasing in that? Yeah this is rather interesting. I'm not...

samlan16 wrote:Be sure to get its oil changed every 10,000 miles and it'll work well. And don't forget emissions testing.

Why does time appear to be continuous?

It's not. Your vision is just blurry so it looks that way.

What is the integral of e^x? (heh heh)

Does anybody have any winning scores from any competition? I want to see about what is needed distance-wise for a gold. Of course, every competition is different, but a general score range would be helpful. Thanks! Well, this depends on competiton more than you think. Mostly level of competition. A...

GoldDigger wrote:But a single 9V Lithium Ion battery should be fine right?

Well, not 9vV if it's commerically available and rechargeable. That's limited to 7.2.
If you are talking about like the Energizer lithium batteries that are 9V, sure.

Help on the release: I'm using a pulley launcher and the lower pulley is parallel to the car, but how do I get the string/rope to easily release? I'm using nylon cord and eyehooks btw and I have several feet of dowel I feel like using For us we had a screw protruding a few millimeters upwards from ...

Hey are we allowed to use Lithium Ion or Non-Alkaline Batteries?? Yes, Buuuuuttt... Not quite. The voltage Limit for battery packs is 7.2 and, unfortunately, LiPo batteries consist of 3.7 volt cells, so a 2 cell LiPo battery is not allowed, and a 3.7 volt is impractical. LiFe are also impractical (...

GoldDigger wrote:Hey are we allowed to use Lithium Ion or Non-Alkaline Batteries??

Yes, there is nothing in the rules that says anything against them!

Bazinga+ wrote:

GoldDigger wrote:Is the vehicle supposed to travel straight on the track without moving off the center tape?

There is no center tape. Or at least the ES isn't required to have one.

Yeah, only a center point on the starting and ending lines...so it would make sense to make it go straight

like from the top of the launcher to the bottom but diagonally Well, that shouldn't necessarily be any particular distance, it varies from launcher to launcher. Just make sure it is taught when the whole set up is in the ready to launch position. 90 cm does seem close to what mine was, though. thom...

Does the diagonal have to be 90 cm? Which diagonal are you referring to? The string diagonal if you get rid of one of your pulleys so you only have 2? like from the top of the launcher to the bottom but diagonally Well, that shouldn't necessarily be any particular distance, it varies from launcher ...