Hi,
On 7-10-2011 1:58, Alan J Fletcher wrote:
At 04:44 PM 10/6/2011, Man on Bridges wrote:
Mice reach a head-body-length ranging between 4.5 upto 12.5 cm, added
is a 3 upto 11 cm long tail. The weight, sofar known, is between 12
and 35 grams.
Lets assume an average length of 8.5 cm with a 7 cm long tail and a
diameter of 3 cm and an average weight of 23.5 gram.
Ok now try to squeeze these mice in the smallest possible space and
assume the tails can be placed between the mice requiring no extra
space in the volume in a L*B*H box.
This results in (10 * 8.5 cm) * (30 x 3 cm) * (20 x 3 cm) + (1 * 8.5
cm) *(1 * 3 cm) * (30 * 3 cm ) , this means these 6030 mice (Hey, we
don't like partial mice ;-) )need a volume of approx. 461 liter and
have a weight of 142 kg.
So I guess we can rule that one out as possible energy source, can't
we ? ;-)
As a cross-check, their density is very close to that of water. That
gives 142 liters -- which has to fit in the 90 L fatcat.
But my 50 kJ/day was for RESTING metabolism. They only have to do it
for 4 hours.
What's the ACTIVE metabolism? 100 kJ/hr ? So only 3015 are needed,
and they fit in 70 litres .. with plenty of room to spare.
Hmmm, but that means they are squeezed so tightly, they have no room at
all to breath (i.e. expanding their chest); have you ever tried to
breath in and out while someone is sitting on your chest? Don't think
they will manage that for four hours.
Kind regards,
MoB
