Archimedes principle physics help?

May 2021 4 43 Report

Archimedes principle physics help?

a)state archimedes principle in your own words(what is it first?)

b) if an object is completely submerged in water, what does archimedes principle tell us about the buoyant force on the object?

c) if an object is floating in water, what 2 things are true about buoyant force?

d)if ice is floating in a glass of water and ice melts, does the water level rise , fall, or remain unchanged.

e) give an example of the principle in action in the real world.

Science & Mathematics / Physics

minorchord2000

Verified answer

The Archimedes principal is simple yet elegant. When an object is completely submerged in water, it displaces a volume of water that equals the volume of the submerged object. For example, if a cube of steel which is equivalent to 1 cubic foot of volume is placed completely in water, it will displace 1 cubic foot of water.

If an object is floating in water, the density of the floating object is less dense than water. For example, wood floats because its density is only about 33 lbs/cubic foot and water is 62.4 pcf. Steel will not float because its density if 495 pcf. A steel boat such as a cruise ship floats because the buoyant force which pushes up on the bottom of the hull is much higher than the volume of the displaced water. A ship that displaces 40,000 lbs of water would displace 40,000/62.4 = 641 cubic feet of water resulting in an upward force of 40,000 lbs.