Re: OT: Repeatably lobbing "projectiles"

On Tue, 26 Nov 2024 02:37:24 -0700, Don Y
<blockedofcourse@foo.invalid> wrote:

On 11/23/2024 6:20 PM, Don Y wrote:

What if I do this mechanism BACKWARDS?
 
I.e., use a spring in extension mode.  Let the "carriage" STRETCH
it to a desired length (storing energy).  HOLD the "free" end of
the spring in place ELECTROMAGNETICALLY (!).

>
THIS is the solution!  One can purchase electromagnets that can
hold 40+ pounds (some operating at up to 100 pounds) for ~$75 (QTY1)
and operate them from a 24V supply with << 1A.

I suspect that there is no limit in pounds per watt that an
electromagnet might hold up. Or it's at least enormous.