Date: Thu, 10 Feb 2011 09:53:23

Author: Jerry DiMarco

Subject: Re: inexpensive masses?

Post:

That's a tough price to beat. Strangely, nuts are cheaper than
washers in some sizes, but in the mass you want won't be under a
dime. Even the usual standbys like shot, sinkers, bbs and marbles can't be
had for less than that new. Maybe you could start a rock collection, or
buy cheap containers and fill them with water or sand...

Jerry
D


At 2/9/2011 03:01 PM, you wrote:
>I am putting together some experiments on the topics of forces and simple
>machines to do with the 3rd graders at our local elementary school, and
>I'm in need of suggestions for inexpensive objects to use for masses /
>weights.
>
>I bought a box of washers, which were about 9g and 10 cents each, but
>ideally I'd like to find something where each mass is somewhere between
>20 g to 50 g, and less expensive :).
>
>I appreciate any ideas you may have,
>
>Karen Hunter


<><><><><><><><><><><><><><><><><><><><><><><><><><><><><>

Jerry DiMarco
Manager of Lecture Demonstrations and Instructional Labs
Montana State Univ., Physics Dept.
Bozeman, MT

Our Motto: "A demo a day helps learning to stay"



From tap-l-owner@lists.ncsu.edu Thu Feb 10 12:51:34 2011

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