A fisherman and his young son are in a boat on a small pond. Both are wearing li

Question

A fisherman and his young son are in a boat on a small pond. Both are wearing life jackets. The son is holding a large helium filled balloon by a string. Consider each action below independently and indicate whether the level of the water in the pond, Rises, Falls, is Unchanged or Cannot tell.

The fisherman fills a glass with water from the pond and drinks it.

The fisherman lowers the anchor and it hangs one foot above the bottom of

the pond.

The fisherman lowers himself in the water and floats on his back

The son gets in the water and pops the helium ballon

The son pops the helium balloon.

The fisherman knocks the tackle box overboard and it sinks to the bottom.

Explanation / Answer

This is a game of volume of water replaced due to an object and wt. of that object...
If the volume of water replaced (i.e the TOTAL wt. sustained by the water) is more after an event, then thewater level will rise, and vice verse.

Water level rise as the water in taken by the fisherman is contributing to the wt. of the boat now.

Unchanged, as anchor is in boat or hangs...it always contributes to the wt. of boat.

Unchanged

Increases as now water ALSO holds sons wt.

Water level rise, as wt increase, as now water ALSO holds sons wt.

Decrease

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