Innovate Thinking

Picture a bridge four kilometres long and strong enough to hold ten thousand kilograms, but no more. A loaded transport truck weighing exactly ten thousand kilograms drives onto the bridge. At the halfway point, a sparrow weighing 30 grams lands on the truck, yet the bridge doesn’t collapse. How could this be?

Scroll down to see the answer!

Answer:
The truck would have burned off more than 30 grams of fuel in the first two kilometres of crossing the bridge. Therefore the sparrow’s weight would have had no effect.