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 son pops the helium balloon.
The fisherman knocks the tackle box overboard and it sinks to the bottom.
The son finds a cup and bails some water out of the bottom of the boat
The fisherman lowers himself in the water and floats on his back.
The fisherman lowers the anchor and it hangs one foot above the bottom of the pond.
The son gets in the water, looses his grip on the string, letting the balloon escape upwards.

Answer 1

Based on the weight of the objects in the water, the water level in the given scenario is as follows;

• unchanged
• rises
• falls
• unchanged
• rises
• rises

What changes will be observed in each of the given scenario?

The rise or fall of a fluid when an object is placed in it is determined by the density, mass, and volume of the object.

According to Archimedes' principle, the upthrust or upward force acting on a body fully or partially  immersed in a fluid, is equal to the weight of the fluid displaced.

Considering the given situations:

1. The son pops the helium balloon - water level is unchanged because the weight of the balloon is negligible.
2. Fisherman knocks the tackle box overboard and it sinks to the bottom - water level will rise since the tackle box has significant weight
3. Son finds a cup and bails some water out of the bottom of the boat - water level will fall since some volume of water is being removed and added to the boat.
4. Fisherman lowers himself in the water and floats on his back - water level is unchanged because no additional weight is added to the water
5. Fisherman lowers the anchor and it hangs one foot above the bottom of the pond - water level will rise since the anchor will displace some volume of water equal to its weight in the pond
6. Son gets in the water, looses his grip on the string, letting the balloon escape upwards- water level will rise since the weight of the balloon and string are significant.

In conclusion, the rise in water level depends on the weight of the objects.

Learn more about upthrust at: brainly.com/question/20432193

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