Need verification of an equation

  • Thread starter Thread starter Hatesmondays
  • Start date Start date
  • Tags Tags
    Buoyancy
AI Thread Summary
The discussion focuses on finding the correct equation for buoyancy force, referencing Archimedes' principle. The user attempts to derive a formula involving the weight of an object, the density of the object, and the weight of the displaced fluid. There is frustration expressed over the lack of clarity in existing resources, including Wikipedia, regarding the buoyancy equation. Additionally, basic formulas for calculating weight and density are mentioned, emphasizing the need for a clear understanding of buoyancy. The conversation highlights the challenge of locating a definitive buoyancy equation.
Hatesmondays
Messages
17
Reaction score
7

Homework Statement



Just trying to find an equation for buoyancy force.

Homework Equations


237bee86559c5c0d935068fd88c93d5d.png


The Attempt at a Solution


If
weight of an object in a fluid density of the object
_______________________= ________________
weight of the displaced fluid density of fluid

Than
weight of object x density of fluid
weight of displaced fluid= ___________________________
density of object

Weight of displaced fluid=w1=buoyancy forcew2d1
___________=b-force
d2

[/B]
 
Physics news on Phys.org
Hatesmondays said:

Homework Statement



Just trying to find an equation for buoyancy force.

Homework Equations


237bee86559c5c0d935068fd88c93d5d.png


The Attempt at a Solution


If
weight of an object in a fluid density of the object
_______________________= ________________
weight of the displaced fluid density of fluid

Than
weight of object x density of fluid
weight of displaced fluid= ___________________________
density of object

Weight of displaced fluid=w1=buoyancy forcew2d1
___________=b-force
d2
[/B]

I gave you a link. What is the problem?
 
It does not mention what the =buoyancy equation is. Archimedes principle is limited. I also went to the buoyancy page on wikipedia. not help.
 
Hatesmondays said:
It does not mention what the =buoyancy equation is. Archimedes principle is limited. I also went to the buoyancy page on wikipedia. not help.
What is the formula for calculating the weight of a body? What's the formula for calculating the density of an object?
 
Mass times gravity and mass divided by volume.
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Buoyancy and the Archimedes Principle
Replies
6
Views
2K
Should I Use the Total Length of an Object to Calculate Buoyancy?
Replies
10
Views
11K
How Do You Calculate the Volume of a Floating Object?
Replies
10
Views
11K
How to Calculate Upward Force on Each Anchorage?
Replies
3
Views
2K
Finding downward force on immersed object
2
Replies
62
Views
4K
Finding a buoyant force on an object
Replies
10
Views
5K
Solving the Mystery of the Ball & Beakers: Determining the Layers of Fluids
Replies
7
Views
2K
Archimedes' Principle and a weather balloon
Replies
1
Views
3K
Water level before and after metling of ice cube
Replies
4
Views
2K
Optimizing Mass for Vertical Rod Buoyancy in Unknown Fluid
Replies
29
Views
3K

Hot Threads

Recent Insights

Back
Top