Quote:
Originally Posted by Shnoz
I think perhaps what xelasnave said could have a interesting effect upon the answer. Since in this respect, force is going to be transferred into weight upon the bridge, throwing the pins higher would require more force. Therefore, a larger reaction would occur on the bridge. If the juggler threw even a single pin high enough, he could theoretically exceed the bridge's safe load rating.
Perhaps the answer is neither D nor E, but A; because we require to know how much force the juggler is placing upon the pins.
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Anythings possible. The juggler could be superman and throw the pins out of orbit

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Remember the Juggler is walking across the bridge as he/she is juggling. Assuming that juggling involves throwing the pins vertically, a pin thrown too high will not be retrieved.
The Juggler doesn't have much scope as to how far a pin can be thrown, and while E is not technically correct, it's still probably closest to being the correct answer.
Steven