Friday

September 19, 2014

September 19, 2014

Posted by **Phillip** on Tuesday, December 16, 2008 at 12:15am.

- Physics - Buoyant Force -
**Damon**, Tuesday, December 16, 2008 at 3:25amfind volume of metal first

Buoyant force in water = 14 N = weight of water displaced in 1 g gravitational field

mass of water displaced = 14 N/9.8 m/s^2 = 1.43 kg of water displaced

the density of water = 1,000 kg/m^3

so

volume of metal = 1.43*10^-3 m^3

Buoyant force in unknown = 50 - 41 = 9 N

so mass of unknown displace = 9/9.8 = .918 kg

so the density of unknown = .918kg/1.43*10^-3 = 642 kg/m^3

or 64.2% of the water density

- Physics - Buoyant Force -
**Phillip**, Tuesday, December 16, 2008 at 8:59amI'm confused about the "1 g gravitational field". What's the 1 g referring to and why is it 1 g?

- Physics - Buoyant Force -
**Damon**, Tuesday, December 16, 2008 at 10:43amg is the acceleration of gravity which is about 9.8 m/s^2 on the surface of earth.

Since the weights were given in Newtons, a unit of force, not mass, I used weight in Newtons = mass in kilograms * acceleration in meters / second squared to find the mass in kilograms.

- Physics - Buoyant Force -
**kriz**, Wednesday, September 30, 2009 at 12:50pmwhere did you got the buoyant force in water?

**Answer this Question**

**Related Questions**

Urgent - Physics - The U-shaped glass tube in the figure below contains two ...

Chemistry - three separate questions 1. An empty graduated cylinder weighs 82....

physics - A column of water of height h1 = 70.0 cm supports a column of an ...

college Chemistry - 1. If 25 grams of Iron (III) hydroxide is dissolved in a ...

Chemistry - O.k. I am confused. So here is what I did. Mass of empty flask plus ...

Chemistry - An unknown metal, heated to an unknown temperature until a liquid is...

Chemistry - mass of empty flask with stopper = 32.634 g mass of flask with water...

Chemistry - The Densities of Liquids and solids O.k. so here is my problem. I ...

AP CHEMISTRY - The molar mass of an unknown organic liquid (M~100) is determined...

Chemistry - A mass of 0.200 kg of an unknown metal at 94C is placed in 0.3 kg of...