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Is this a 1921 Dollar you'd like to own ?? Winner announced first post !!!
Smittys
Posts: 9,877 ✭✭✭✭✭
It can be yours if you guess the weight to the nearest tenth of a gram.
One guess per person.
Ties will be randomly chosen.
Winner picked on monday
Two correct answers ..... FredF and JBN
Winner by a flip of a coin ......drum roll .....................................................
............................................................................. FredF. !!!!!!!!!
Pm me your address ,
Great math JBN
One guess per person.
Ties will be randomly chosen.
Winner picked on monday
Two correct answers ..... FredF and JBN
Winner by a flip of a coin ......drum roll .....................................................
............................................................................. FredF. !!!!!!!!!
Pm me your address ,
Great math JBN
0
Comments
www.brunkauctions.com
<< <i>24.1 >>
You actually chose the same weight as I... I was just a little more precise (24.06 = 24.1 to the tenth position). I wanted to enter 24.057 (also 24.1 to the tenth position), but I thought it might be too confusing.
Thanks for the chance. Steve
24.2
23.7
Why? I don't know why...
Thanks for the chance!
mbogoman
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Thanks for the chance
thanks!
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oh ya, i guess you round mine out to a 23.9 then.
ok 23.9 grams
Morgan dollar mass = 26.73 g
From my monitor photo of the subject Morgan:
(1) Coin is 5 9/16” in diameter.
(2) One large hole is 3/4" in diameter.
(3) Twenty small holes are 5/16” in diameter.
(4) Six pockmarks and coin wear is assumed equivalent to one 1/8” hole.
Given: Area of circle is pi X [radius]^2 or pi X [diameter]^2 divided by 4.
Total coin area = 3.14159 X 5.5625 X 5.5625 divided by 4 = 24.301 square inches.
Large hole area = 3.14159 X 0.75 X 0.75 divided by 4 = 0.4418 square inches.
Small hole area = 3.14159 X 0.3125 X 0.3125 divided by 4 = 0.0767.
Twenty small holes = 1.534 square inches.
Pockmark and coin wear hole = 3.14159 X 0.125 X 0.125 divided by 4 = 0.01227 square inches.
Totalling removed areas: 0.4418 + 1.534 + 0.01227 = 1.988 square inches.
Assume that ratio of lost area is equivalent to ratio of lost mass.
([24.301 -1.988 square inches]/24.301 square inches) X 26.73 g= 24.54 g.
My guess is 24.54 g
–John Adams, 1826