05.07.2014 Views

Chapter 3 PRESSURE AND FLUID STATICS - Department of ...

Chapter 3 PRESSURE AND FLUID STATICS - Department of ...

Chapter 3 PRESSURE AND FLUID STATICS - Department of ...

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

The altitude <strong>of</strong> a hot air<br />

balloon is controlled by the<br />

temperature difference<br />

between the air inside and<br />

outside the balloon, since<br />

warm air is less dense than<br />

cold air. When the balloon<br />

is neither rising nor falling,<br />

the upward buoyant force<br />

exactly balances the<br />

downward weight.<br />

46

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!