# Tag Info

### When I walk down the stairs where does my potential energy go?

Make it simple. If a mass of your weight fell down the height of three flights of stairs through the air, when it landed where would the kinetic energy accumulated by falling go? moving the earth ...
• 230k

### Why does a system try to minimize its total energy?

The anthropomorphic formulation "tries to" is misleading. Under the effect of ambient noise, matter explores the possible configurations around its current state: e.g., two single hydrogen atoms ...

### Why can't we make a perpetual motion machine by using a magnet to pull up a piece of metal, then letting it fall back down?

Now, in my head, if you give the pendulum a little impulse, it will swing up in one direction and get attracted by the magnet just a tiny bit. You've neglected to account for the magnetic attraction ...
• 128k
Accepted

### When I walk down the stairs where does my potential energy go?

The heat is predominantly generated in your muscles. More direct conversion of potential energy to heat is when a person is sliding down a pole to get to a lower floor quickly. With sufficient ...
• 18.4k

### Will tsunami waves travel forever if there was no land?

The waves will not travel forever. Water particles moving against and around each other will have friction, and the friction will cause motion energy to be converted to heat (which will dissipate ...
Accepted

### What exactly makes a force conservative?

All fundamental forces are conservatives and I would say that this is a postulate. Fundamental physics is constructed in such way that there is a quantity called energy which can be assigned to every ...
• 17k
Accepted

• 10.9k
Accepted

### Playing cymbals in vacuum

When you strike cymbals (or any other object) you give them a certain amount of energy. If the object is stiff and light (like cymbals) this energy will cause the object to vibrate. The vibrations ...
• 42.1k