pennies into pounds

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pennies into pounds

Postby rglass@nngov.com » Fri Jun 10, 2005 12:05 am

how much does a penny weigh? How many pennies would there be in a pound of pennies?
rglass@nngov.com
 

Postby Guest » Fri Jun 10, 2005 2:01 am

The guys who make them,
http://usmint.gov/faqs/circulating_coin ... ifications
say a penny weighs 2.50 g, so 181-182 per pound.

Above page gives weights, dimensions for all US coins.
Guest
 

Re: pennies into pounds

Postby Guest » Sun Aug 13, 2006 8:09 pm

rglass@nngov.com wrote:how much does a penny weigh? How many pennies would there be in a pound of pennies?
Guest
 

Re: pennies into pounds

Postby PHXinArizona » Sun Nov 20, 2011 6:11 pm

It depends on the date of the penny. Lincoln pennies minted from 1909 to 1982 are 95% copper and weigh 3.11 grams each. (Except the 1943 steel pennies which weigh less)

In mid 1982 pennies were switched from being made mostly of copper to zinc with a very thin coating of copper. These zinc pennies (including ones made today) weigh 2.5 grams.

These weights are for pennies that are in new condition and haven't been worn down by lots of handling.

1000 grams = 1 kilogram

1 kilogram = 2.2 pounds

1000/2.2 = 454.54 grams to a pound

454.54/16 = approx. 28.41 grams per ounce (16 ounces = 1 pound)

3.11/28.41 = approx. 0.11 Weight in ounces of one pre-1982 Lincoln penny

2.5/28.41 = approx. 0.088 Weight in ounces of one post-1982 Lincoln penny

It would take approx. 146 pre-1982 pennies to equal one pound. (28.41/3.11 x 16)

And approx. 182 post-1982 pennies to equal one pound (28.41/2.5 x 16)

The composition of the Lincoln penny was changed in mid-1982. Some 1982's are copper, some are zinc. You would have to weigh each individually to determine without actually cutting into it to get the composition of the coin.
PHXinArizona
 


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