Puzzle solutions are due by 9:00 AM on Monday of each week.
Puzzles are worth 5 points of credit each.
Answers must be accompanied by valid reasoning. Just like the tests, the answer alone isn't enough!
Each week, the first student to submit a correct answer will receive the stylish
152 T-shirt.
Previous winners get a "virtual t-shirt." No shirt, but a chance to win a prize with actual value at the end of the semester (often a book, or maybe software).
Please enter your solution in the text area at the bottom of this page. DON'T FORGET TO GIVE YOUR NAME!
"STATIC EQUILIBRIUM"
The pictures to the left show Jack and Danny in static equilibrium before and after
Jack extends his arms. (Before you call Social Services, be advised that Danny loved doing this!) The point of contact between the stilts and floor did not change as
Jack extended his arms.
Consider the following three cases?
Static case with arms not extended (first picture).
Theoretically, could this position be maintained on a frictionless surface?
Static case with arms extended (second picture).
Theoretically, could this position be maintained on a frictionless surface?
Transition between the static positions, Jack extends his arms and moves
Danny outward.
Theoretically, could this move be accomplished on a frictionless surface?
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