Beaker with water on a weighing scale

In summary, the conversation discusses the balance of a weighing scale with a beaker of water on one side and a balancing weight on the other. Questions are raised about whether the balance will be upset and which side will appear heavier if a finger is placed in the water without touching the beaker. The conversation also explores the concept of exerting force on the water/beaker system and the displacement of the water when a finger is inserted.
  • #1
whoelsebutme
9
0
beaker with water on a weighing scale...

A weighing scale has a beaker of water on one side and a balancing
weight on the other side.

You put your finger into the water carefully without touching the beaker. Will the balance be upset?

Which side will appear heavier, if so?

What will happen in instead of your finger you hold a wooden rod or a steel rod in the water, but without touching the beaker?
 
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  • #2
What do you think? When you stick your finger in the water are you exerting a force on the water/beaker system? (Hint: Does the water exert a force on your finger?)
 
  • #3
Doc Al said:
What do you think? When you stick your finger in the water are you exerting a force on the water/beaker system? (Hint: Does the water exert a force on your finger?)

I think it does...
 
  • #4
Displacement of the water :P ?
 
  • #5
whoelsebutme said:
I think it does...
Of course it does. Also note that when you stick your finger in the water, the water level rises.
 

1. How does the weight of the beaker with water on a weighing scale compare to the weight of the empty beaker?

The weight of the beaker with water on a weighing scale will be greater than the weight of the empty beaker. This is because the water adds additional mass to the beaker, increasing its weight.

2. Does the type of beaker used affect the weight measurement on the scale?

Yes, the type of beaker used can affect the weight measurement on the scale. Different materials and sizes of beakers will have different weights, which can impact the overall measurement.

3. Why is it important to tare the scale before weighing the beaker with water?

Taring the scale removes the weight of the beaker itself, allowing for a more accurate measurement of just the water. This is important because the weight of the beaker can vary and impact the overall weight measurement.

4. How does the volume of water in the beaker affect the weight on the scale?

The volume of water in the beaker does not directly affect the weight on the scale. However, a larger volume of water will result in a higher overall weight measurement due to the added mass of the water.

5. Can the weight of the beaker with water on a weighing scale be used to measure the volume of the water?

No, the weight of the beaker with water on a weighing scale cannot be used to measure the volume of the water. While there is a relationship between the weight and volume of water, other factors such as the shape and size of the beaker also play a role, making it an inaccurate measurement of volume.

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