On the path she is on, she comes up to a rope bridge with a sign saying that the rope bridge can hold a maximum weight of 130 pounds, and that if any more weight is placed on the bridge it will collapse.
The girl knows her weight is 100 pounds, so she walks across the bridge carrying both gold bars, and the bridge does not break. How is this possible?
2007-01-01 08:02:22 · 8 answers · asked by john h 7 in Entertainment & Music ➔ Jokes & Riddles
Gold is weighed using the Troy system, where there are only 12 ounces to a pound. The maximum weight specified on the bridge will be using the normal imperial system for measuring weight, where there are 16 pounds to an ounce.
Because of this 40 pounds of gold (weighed using the Troy system), will only weight 30 standard imperial pounds. This means that her total weight, including both gold bars, is 130 pounds, the exact capacity of the bridge.
OR...
The girl would simply throw one of the gold bars up in the air while holding the other in a juggling manner.
Thus, she would never be holding more than 120 pounds as long as she threw the opposite bar up before she caught the other.
hehehe
2007-01-01 08:06:58 · answer #1 · answered by Anonymous · 2⤊ 1⤋
Hmm, not to play word games, but: 1. The girl may have lost some weight from all her running. 2. The gold bars may be measured in Troy ounces (different from regular ounces), thus making the 20-pound assessment inaccurate. 3. The bridge's designer may have been a little conservative in saying the bridge can only support 130 pounds (that's a pretty flimsy bridge, you have to admit). 4. But I bet the answer your teacher wants to hear is that the girl repeatedly tossed one bar or the other into the air, sort of juggling them, so that the bridge never supported more than 120 pounds. This completely ignores the fact that putting an additional 20+ pounds of force (force meaning mass plus acceleration) needed to toss up a bar would actually put _more_ weight than a mere 140 pounds onto the bridge. But that's more of an engineering concern. I guess.
2016-03-29 03:27:26 · answer #2 · answered by Anonymous · 0⤊ 0⤋
HAHAHA! Looks like you got some added stuff you never thought of. Gold is weghed in troy, buy you said "pounds" so gold pounds is heavier than, say bricks. Juggling is the usual answer but like somebody pointed out, the force of tossing a weight into the air offsets the gain of the weight being in the air. So what is the answer?
2007-01-01 08:19:43 · answer #3 · answered by R M 2 · 0⤊ 0⤋
just had to mention, a standard gold bar weighs 45 pounds, that's 45 16oz lbs, not troy measurement of 12oz per pound
2007-01-01 08:19:28 · answer #4 · answered by Anonymous · 0⤊ 0⤋
she sweat to the 80's to loose 10 pounds, richard simons works wonders!
2007-01-01 08:15:00 · answer #5 · answered by Anonymous · 1⤊ 0⤋
she was juggling the gold bars.
2007-01-01 08:08:41 · answer #6 · answered by funmzire 5 · 0⤊ 0⤋
it doesnt break, it collapses lol i have no idea i agree with violarules
2007-01-01 08:18:33 · answer #7 · answered by LittleBit 3 · 0⤊ 0⤋
SHE PROBLAY TOSS EACH ONE ACROSS AND THEN SHE WALKED OVEER
LOL
HAPPY NEW YEAR
2007-01-01 09:05:49 · answer #8 · answered by ` сhαcз сяαшfσяd ∞ 2 · 0⤊ 0⤋