if an floatable object is placed in a bowl of water what wud be the total weight of the bowl +water +object?

Question

Example
weight of bowl + water = 500 gms
weigt of floatable object = 50 gms

Answer:
the total weight of all of the above when the object is submerged in the bowl of water will be

we have two options

1) Equal to 550 gms
2) Less than 550 gms

Answer 1

How can it be either of those? The bowl weighs something. The water weighs something. The object HAS to weigh something, so how can the answer be just bowl + water or even LESS than bowl plus water?

Think of it like this:

A bowl has a set volume of substace it can hold. When you put water it it the water will occupy some of that space (the rest will be full of air). When you put something else in the container, the water level rises because that something else will take up some of the volume. The water is DISPLACED. This is what decides if things float or not. If the object displaces its weight worth of water, it will float (a solid brick of steel will sink, but a battleship will float). This is because the water wants to be flat in the bowl, but the object that is floating is displacing the water, pushing the water up the sides of the container, so that the water level is higher on the sides of the container than it is under the floating object. So the higher water wants to go where the water is lower so that the water level is even. This makes an upward force. This upward force cancels the downward force of the WEIGHT (m*g) of the object. So since the entire weight of the object is being supported by the water it has displaced, the scale does not support any of the weight of the object. Since the scale is not supporting any of the weight of the object it won't register on the scale.


It isn't about summing only the weights on the scale. It is about summing ALL the forces in the scale/bowl system. (Recall: weight is a force)

Answer 2

Id say that it wud b equal to 550gms.Although the object is floatable it still has a mass and when it is submerged in a in a body that is 550 its only right that thegms would increase by adding 550+50 .without a doubt the answer has got to be equal to 550gms

Answer 3

=550 gms. Unless you plan on the tiny water evaporation it takes in the second you take to put the object in.

If your talking about a FULL bowl of water than it depends on the water loss when you drop that baby in there.

Answer 4

the weight of all of the above is 550.

All you do is add all the weights together.

If you were only weighing the object in the water, then you might have to do some math, as the weight would be distributed and the object is floating.... but just add it all up.

Answer 5

If a truck hauling a load of birds while on the scale and all the birds became airborne would the gross vehicle weight include the weight of the birds while at rest, would the gvw increase or decrease??? Things that make you go hmmm….

Answer 6

Think. Why would it be any different than 550 gms.

Answer 7

#1

Answer 8

Give it a guess! You have a 50/50 chance of getting it right!

Answer 9

Why do you think you have a second option? Tell us where the missing mass would go?

Answer 10

True