Henry Ernest Dudeney/Puzzles and Curious Problems/223 - The Tower of Pisa

Puzzles and Curious Problems by Henry Ernest Dudeney: $223$

The Tower of Pisa

Suppose you were on the top of the Tower of Pisa, at a point where it leans exactly $179$ feet above the ground.

Suppose you were to drop an elastic ball from there such that on each rebound it rose exactly one-tenth of the height from which it fell.

What distance would the ball travel before it came to rest?

Sources

• 1932: Henry Ernest Dudeney: Puzzles and Curious Problems ... (previous) ... (next): Geometrical Problems: Various Geometrical Puzzles: $223$. -- The Tower of Pisa
• 1968: Henry Ernest Dudeney: 536 Puzzles & Curious Problems ... (previous) ... (next): Arithmetical and Algebraical Problems: Miscellaneous Puzzles: $241$. The Tower of Pisa