So, in What If, made by xkcd guy Randall Munroe, an off-handed joke about his famous love of Cadbury Creme Eggs was made.

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In the image's mouseover text, Randall jokes his life's dream is to own enough Cadbury Eggs to determine their precise angle of repose.

For those who don't know, an object's angle of repose is the angle of the slope of a pile of that thing on the ground. Here's a subpar MS Paint reference.

enter image description here

So, at room temperature, with the wrappers on, what is the precise angle of repose for a standard Cadbury Creme Egg?

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    $\begingroup$ With foil wrappers or without? It'd affect the friction. $\endgroup$ – innisfree Sep 20 '16 at 5:01
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    $\begingroup$ @innisfree temperature would also have an effect... if it was nice and warm there would be significant additional adhesion. $\endgroup$ – IanF1 Sep 20 '16 at 5:43
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    $\begingroup$ Predicting the properties of granular materials is notoriously difficult. There is little change of doing this from first principles. You'd have to do the experiment. $\endgroup$ – John Rennie Sep 20 '16 at 10:13
  • $\begingroup$ innisfree and IanF1: Question conditions refined. John Rennie: Right. This question is sort of aimed at the sad sort who knows a lot about physics, but is still stuck in a Cadbury factory (or just really likes Cadbury Creme eggs). $\endgroup$ – Papayaman1000 Sep 20 '16 at 13:12

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