A trackhoe weighing 8 tons is on top of a flatbed trailer and heading east on Interstate 70
near Hays, Kansas. The extended shovel arm is made of hardened refined steel and
the approaching overpass is made of commercial-grade concrete, reinforced with 1 1/2 inch
steel rebar spaced at 6 inch intervals in a crisscross pattern layered at 1 foot vertical spacing.
Solve: When the shovel arm hits the overpass, how fast do you have to be going to slice
the bridge in half? (Assume no effect for headwind and no breaking by the driver...)
Extra Credit: Solve for the time and distance required for the entire rig to come to a
complete stop after hitting the overpass at the speed calculated above.
Answer - Who cares, the trucking company just
bought themselves a bridge…
see also
Bizarre, Emergency, Safety, Stress & Travel Sections
“Break In Motion” Brake
CarGo Loads
Deconstruction
Driving in Bolivia
Hanging Load
“Honey, I Lost My Job...”
How To Load/Unload Your Boat
Laundry Load
Lean Two Transportation
Lost Axle
Overpass Underpassed
Oversize Load
Pickup Dropoff
Portable Shower
Safe Removals
Tire Trike
Tired Truck
Train Hits Deer
When Not To Stop Too Fast
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