Tuesday, January 8, 2008

Friction

I don't like it. In most cases, it isn't a good thing.

In my knee it causes inflammation. In my shoes it causes blisters. In life, well....it's complicated, right?

Take sliding friction for instance -- when two solid surfaces slide against each other -- it is really good at opposing the movement of the objects and eventually causes them to stop moving. When you are trying to move forward, sliding friction is not good. But the funny thing about sliding friction is that it isn't caused by the roughness of the surfaces, but by chemical bonding between the surfaces. Huh, chemistry.

And if memory serves me correctly (which it may not but bear with me), isn't it friction that changes energy generated from motion into thermal energy....heat?

So we've got two forces in opposition generating heat. hmmm. But if the friction is too high, both forces come to a rest. No movement. No thermal energy. Not good.

However, rolling frictional force is less than kinetic (sliding) frictional force. So when sliding is too tough and everything just stops, try rolling instead. Hence the ever popular use of ball bearings...( I love Fletch).

So, sometimes, I guess you have to just roll with it.

4 comments:

Erin said...

oh girl...
vegas cures all friction - at least temporarily. :)

MikeW said...

What have you done with Dionn, you savant physicist, you?

Shorey said...

What on earth are you talking about???

Lulu said...

Actually the possibility of locating some sliding friction in and around the area of Bellagio is high young Galileo. So look wisely, perform observation and definitely do forget the importance of experimentation. ;)