Calculating Buoyant Force for a Suspended Cylinder in an Unknown Fluid

In summary, the conversation discusses an aluminum cylinder suspended in an unknown fluid by a spring scale and the buoyant force on the cylinder. The relevant equations for calculating the buoyant force are also mentioned. The conversation also includes a separate question about spending money and the importance of starting work on a problem earlier.
  • #1
astru025
163
0

Homework Statement



An aluminum cylinder is suspended in an unknown fluid by a spring scale. Outside the fluid, the object weighs 20N. In the fluid, the scale reads 10N. What is the buoyant force on the cylinder?

Homework Equations



Fb= pVg, p= density of fluid, V= displaced volume, g= 9.8 m/s

The Attempt at a Solution


I do not know where to start and any help will be much appreciated! Just need to be pointed in the right direction :)
 
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  • #2
Suppose an object that weighs 20 N is sitting on a scale. You lift up on the object until the scale reads 15 N. How much force are you exerting upward on the object?
 
  • #3
I do not know. Is there an equation I should use for that?
 
  • #4
Please help this problem is due soon!
 
  • #5
You have 20 dollars. You spend some so that you have only 10 left. How much did you spend?
 
  • #6
astru025 said:
Please help this problem is due soon!

No offense, but then you should have started working on the problem earlier and ask for help earlier. Saying "help now because it's due soon" only irritates helpers, it never makes you get help faster.
 

FAQ: Calculating Buoyant Force for a Suspended Cylinder in an Unknown Fluid

What is buoyant force?

Buoyant force is the upward force exerted on an object immersed in a fluid. It is equal to the weight of the fluid displaced by the object.

How do you calculate buoyant force?

Buoyant force can be calculated using the equation Fb = ρVg, where ρ is the density of the fluid, V is the volume of the displaced fluid, and g is the acceleration due to gravity.

How does the shape of the suspended cylinder affect the buoyant force?

The shape of the suspended cylinder does not affect the buoyant force, as long as the volume of the displaced fluid remains the same. The buoyant force is determined by the volume of the displaced fluid, not the shape of the object.

What factors can affect the buoyant force on a suspended cylinder?

The buoyant force on a suspended cylinder can be affected by the density of the fluid, the volume of the displaced fluid, and the acceleration due to gravity. It can also be affected by the depth of the cylinder in the fluid and any external forces acting on the cylinder.

How do you determine the density of an unknown fluid when calculating buoyant force?

In order to determine the density of an unknown fluid, you can use the buoyant force equation and solve for ρ. You will need to know the volume of the displaced fluid, the weight of the suspended cylinder, and the acceleration due to gravity in order to calculate the density of the unknown fluid.

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