GC548D7 HUGE BLOCKS (Unknown Cache) in Queensland, Australia created by walterhellmut

GC548D7 ▼

A cache by walterhellmut Message this owner

Hidden : 5/10/2014

Difficulty:

Terrain:

Size: Size: small (small)

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Geocache Description:

Being at the bottom of an awesome Pyramid you may ponder how the ancient Egyptians could have managed to transport those huge stone blocks

they used for building.
Only recently a

very likely solution

has been found. As you may see on the picture an army of workers hauled a sledge over wet sand

. We may assume a stone block or a statue weighing several tons

is on the heavily laden sledge. A person is standing on it saturating the sandy ground with a liquid. Thus the surface becomes more stable and the friction is reduced considerably.

Less force

is needed to move a heavy load.
To find the force F needed to drag a heavily laden wooden sledge over level wet sand you need to know the according friction coefficient μ_{wood/wet sand} and the gross weight F_N of the load

. Given they had to transport the very heavy gross mass of 4.0 tonnes

and the force every worker was able to put up averaged 150 Newton, how many workers (X) were at least needed to move that block?
With the result go straight South until your South coordinates become
S17°06.3X'.

μ_{wood/wet sand} = 0.21

F = μ * F_N

One tonne correlates roughly with 10,000 Newton

X = number of workers needed

Please BYO pen!

Dry weather and happy hunting

!
By the way: To keep especially the parking

acceptable