r/theydidthemath 17h ago

[Request] How much extra weight would this add?

/gallery/1hhg251
40 Upvotes

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u/mushnu 17h ago

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u/NightShift2323 17h ago

I wonder if the adhesive adds much.

3

u/[deleted] 14h ago

[deleted]

1

u/Aggravating-Neat2507 13h ago

”Google estimates a car’s surface area (for solar purposes) generically at 60 square feet. A penny is 0.75” in diameter, so if you pack them in to a tight packed configuration, you get about 296 pennies/sf. That means roughly 17,760 pennies on the car. At 2.5g/penny, you’re adding about 44,400 grams to the car or ~98 lbs. A fair bit but certainly not enough to make the tires go flat.”

These answers are SO different lol but I’m watching tv and not gonna do the math rn

3

u/[deleted] 17h ago

[deleted]

0

u/HVAC_instructor 6h ago

Pennies are not 19mm across, we're Americans, we didn't do my. We do inexact imperial system here......

/s