Simple Machines

Photograph taken by on Thursday, April 03, 2014
Collyn and Her Class

Collyn and Her Class

It’s that time of year again. One of my very favorite days of the year. It’s the day I visit the second grade class and demonstrate a few simple machines. You remember those, right? Levers, pulleys, inclined planes? Yes. For the previous two visits, see Monday, April 16, 2012 and Wednesday, March 13, 2013.

As you probably know by now, if you have been following my posts for any length of time, the highlight of the day, by far, is the opportunity the second grade students have to pick up their teacher. She’s not exactly heavy to begin with. But second graders are not really big enough to pick her up, or certainly not easily, anyway. With the strength multiplying “magic” of pulleys (and a stout rope), it takes only 20% of her weight to lift her off the ground.

Thanks you, Collyn, for letting me have such fun with your class. You’re a real sport.

Oh, and by the way, happy anniversary, Collyn and Keith!

Comments are closed.