[R-390] Rack Mounted R-390A

[Barry]

And if you don't like word problems, just ask the folks at UPS.  Sadly, they
probably know the answer.

Barry - N4BUQ



> Let's see...
>
> v^2 = u^2 + 2as
>
> Given s = approximately 1.5 (meters) at shoulder height, v is
approximately
> 5.44 m/s when the radio hits the floor.
>
> kinetic energy = (m * v^2) / 2
>
> An R390A's mass is approximately 36 kg
>
> k = (36 * 5.44^2) / 2 = 532.6848 Joules
>
> How big is the hole in the concrete?
>
> Barry - N4BUQ
>