Link for the week: firehose jetpacks

One for the mechanics students this week… First, take a look at this video of the “Flyboard Family” (action starts just over 1 minute in; soundtrack may be best ignored). Then consider how/why one might be able to hover in mid-air, balancing on the jet of water from a fire-hose. Then have a look at this article in Physics Today for a brief quantitative analysis. (MM205 students: this is a nice illustration of force–impulse principles. MM305 students: consider how you might set this up as an integral momentum balance problem…)

Oh, and if you want to know how this compares with the Saturn V rocket or the lateral explosive blast from Mount St Helen’s, see this post on Geology in Motion.

(DP)

Advertisements
This entry was posted in Link for the week. Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s