+141 I still don't understand how pendulums swing back and forth forever, it doesn't sound possible. amirite?

by Anonymous 12 years ago

They don't. The only way would be (as mentioned above) no friction/air resistance. They can keep going for quite a long time, but not forever without something synthetic to keep it moving.

by Anonymous 13 years ago

Aliens

by Anonymous 12 years ago

Its the conservation of energy law (energy cannot be created nor destroyed it merely changes from one form to another). Now, in an ideal situation, the pendulum would keep going forever as the kinetic energy would just become potential energy and then back again etc. However, some of the energy is lost in the pendulum due to friction at the attachment, air friction, etc. so IRL it won't keep going forever.

by Anonymous 12 years ago

Just so you know, matter is created and destroyed (see antimatter).

by Anonymous 12 years ago

We're talking about energy here...

by Anonymous 12 years ago

Matter = energy Please, finish highschool.

by Anonymous 12 years ago

Not at the same time. Take physics again.

by Anonymous 12 years ago

.....really? Jesus Christ, Einstein would turn in his grave if he heard that.

by Anonymous 12 years ago

Okay that wasn't phrased well...in fact, that was just stupid of me. But still the matter thing wasn't exactly analogous.

by Anonymous 12 years ago

How the heck did this get so many yeah you ares? Anyone who has taken a grade 10 science course can tell you why... Or am I totally missing the joke?

by Anonymous 12 years ago

s3.amazonaws.com/kym-assets/photos/images/small/000/158/326/9148130.jpg?1312526087

by Anonymous 12 years ago

invisible man pushing it doh!

by Anonymous 12 years ago

I love Synyster Gates!!!

by Anonymous 12 years ago

hahaa! high 5!

by Anonymous 12 years ago