PDF What 2 factors determine whether an object will float or sink ...
October 10, 2014
What 2 factors determine whether an object will float or sink in water?
October 10, 2014
What 2 factors determine whether an object will float or sink in water?
> mass > volume
? As the mass increases, the object is more likely to... ? As the volume increases, the object is more likely to...
October 10, 2014
Density
? Density is the mass to volume ratio of an object. > It tells you how compact the mass is. > Density = mass/volume
October 10, 2014
Float or Sink?
The density of water is 1 g/ml or 1 kg/L or 1000 kg/m3 ? If an object has a density less than that of water, it
will float. ? If an object has a density more than that of water, it
will sink.
But WHY?...
October 10, 2014
Archimede's Principle
? When something is in water, there are 2 forces acting on it: 1. Gravity (pulls object downward) 2. Buoyant force (pushes object upward) ? The buoyant force is equal to the weight of the volume of water displaced by the object.
What does that mean? Essentially: the more water the object can move out of the way (displace), the greater
the upward force (buoyancy).
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