*Originally posted by: ***slugg**
*Originally posted by: ***bobsmith1492**
*Originally posted by: ***IHateMyJob2004**

Try to figure out a way to have gravity be the driver for a perpetual machine.

I got stuck at this:

feet per second squared. Convert that to the units of energy. I couldn't figure it out.

Hint: there's no such thing as a perpetual motion machine.

Feet/sec^2 would be acceleration - acceleration due to gravity. To get to energy, you'd need an object's mass and altitude; then energy would be

height x mass (or weight...)

height x weight, not mass.

weight = mass * acceleration...

That is, weight is the force of acceleration (gravity) on a mass. Newton's 2nd...

Mass is independent of weight. This is why an object 10 meters high on Earth has more potential energy than the same object being 10 meters high on the Moon. The acceleration is of smaller magnitude...

Not to be annoying, but this is the highly technical forum