whats a good design for a mini balsa wood bridge? it has to hold 100 pounds!? Answered
mass- 45.0 grams or less
length- must be longer than 38.0 centimeters (2.0 cm by 2.0 cm square rod must be able to pass through full length of roadway surface)
height & depth- can't extend more than 12.0 cm above test support surface and 10.0 cm below it.
roadway- will support 100lbs load, cannot be more than 2.0 cm above test support surface
BRIDGES CAN'T BE WEDGED INTO SUPPORTS)
someone please help, i'm stuck!