W W Buoyant Volume of Volume of in air) (in water) force Weight of Ditt. Btwn OB
ID: 2305443 • Letter: W
Question
W W Buoyant Volume of Volume of in air) (in water) force Weight of Ditt. Btwn OBJECT IN) om) 1000g cylinder 550U 46 3. 500g cylinder Hooked bleck 3 Hooked block 20 mL 46 ML 40 mL #2 Golf ball QUESTIONS&ANSWERS; 1. Draw a Free-Body Diagram of an object suspended underwater by a string. Label all forces 2. For objects that sink, how does the buoyant force compare with the weight of water displaced? For objects that float, what is the relation between the buoyant force and the weight of the object? 3.Explanation / Answer
A) for FBD there will be three force viz mg=weight downwards and
Tension, T and B=buoyant force will act uowards.
B) the objects which sink in water has higher density than water.So the buoyant force provided by the weight of the water displaced cannot counter the weight of the object and thus object sinks.
C) for an object that floats the buoyant force is equal to the weight of the object.
D) as the density of steel is very high, so mass of the steel object of very lesser volume is still large, thus a steel object of smaller volume, but higher mass diaplaces a small amount of water and thus buoyant force is small.so it sinks in water.
To make it float, we can place it on a wooden plank of larger area such that weight of water displaced is such large that it provides enough buoyant force to hold a steel block.
E) as B= dvg
where B=buoyant force
d=density of fluid
V= vol of fluid displaced and
g=acceleration due to the gravity
So B is proportional to density.
As oil has lesser density than water, so it will provide a lesser buoyant force.
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