Only one thing will weigh 500kg every time, and that is a 500kg weight. Everything else will vary in its weight, so it will not be exactly 500kg, but polar bears can weigh around that much, if you really need an example.
A roll of pennies weighing 50 grams.
A us nickel weighs 5 grams. So ten nickels weigh 50 grams
A deck of standard playing cards typically weighs around 50 grams.
A typical American currency nickel weighs exactly 5.000 grams.
One pre-1965 silver dime weighs 2.5 grams. At 50 dimes to a roll, 50 times 2.5 equals 125 grams.
Each United States nickel weighs 5 grams. Gather 20 nickels and you will have something that weighs exactly 100 grams
A roll of pennies weighing 50 grams.
10
A us nickel weighs 5 grams. So ten nickels weigh 50 grams
A Penny weighs 3.56 grams. 100 x 3.56 = 356 grams. A Twopence weighs 7.12 grams. 50 x 7.12 = 356 grams. Dead heat.
A deck of standard playing cards typically weighs around 50 grams.
One each of the 5, 10, 20 and 50 cent, 1 Dollar and 2 Dollar coins = 50.95 grams. Australian coins have the following weights - 1 cent - 2.59 grams 2 cent - 5.18 grams 5 cent - 2.83 grams 10 cent - 5.66 grams 20 cent - 11.31 grams 50 cent - 15.55 grams 1 Dollar - 9 grams 2 Dollar - 6.6 grams The 1 and 2 cent coins are still legal tender.
One thing that weighs this much is a average size bag of sugar. There are also many rabbits and Pomeranian dogs that weigh this amount.
A nickel weighs exactly 5 grams.
a lightbulb weighs about 50 grams
A typical American currency nickel weighs exactly 5.000 grams.
One pre-1965 silver dime weighs 2.5 grams. At 50 dimes to a roll, 50 times 2.5 equals 125 grams.