Solve the Riddle: Juggling Force All

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SUMMARY

The riddle presented involves transporting three 1 lb iron balls across a bridge with a weight limit of 200 lbs while weighing 198 lbs. The proposed solution is to juggle the balls, which raises the question of the physics involved, specifically the downward pressure exerted while juggling. The consensus in the discussion confirms that juggling the balls does not exceed the weight limit of the bridge, as the downward force is only applied when the balls are in hand, not while they are in the air.

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This discussion is beneficial for puzzle enthusiasts, physics students, and anyone interested in creative problem-solving techniques involving weight and force dynamics.

istock1
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All,

A friend of mine recently posed the following riddle:

You weight 198 lbs, and need to transport three iron balls that weight 1 lb each across a bridge that can only support 200 lbs. How do you do it?

The proposed answer: Juggle the balls.

It would seem to me that tossing a 1 lb ball in the air high enough to juggle it would exert more than 2 lbs of downward pressure. What do you think? What would be the relevant equation?

Thanks!
 
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Do a search for the thread that asks the same question but with a truck that has a bunch of birds.
 
No Fred, we've also answered this precise question a few dozen times as well...

The short answer, istock1, is that you are correct.
 
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