anyone please can answer Option 1: A 1,200Kg crate is sunk in the harbor and sit

Question

anyone please can answer

Option 1: A 1,200Kg crate is sunk in the harbor and sits on the bottom a depth of 30m. The crate is square and measures 3m on each side. A plan to raise the boat using ping pong balls has been put in place. The boat is sealed so that the ping pong balls can be added to the boat and will remain in the boat displacing enough water to raise it to the surface. An average ping pong ball is 4 cm in diameter. Ping Pong balls have a typical mass of 2.7g and 0.2% of them are poorly made and will take on water. How many will you need? Can you fit than many in the crate?

Explanation / Answer

ping pong balls needed = [(1200 * 9.8 * 3 * 3 * 30)]/[(2.7 * 10-3 * 9.8 * 0.002 * 4/3 * 3.14 * 0.023)]

                                       = 1.8 * 1015 balls

No, we cant fit that many in crate .

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