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Physics problems: fluids and elasticity

buoyant force

 

Problem 5.

A hollow plastic sphere of radius 3.5 cm is lowered below the surface of water reservoir by a rope. Calculate the buoyant force exerted by the water on the sphere.

Solution

 

Problem 6.

A hollow plastic sphere of radius 3.5 cm is lowered below the surface of water reservoir by a rope of tension 1.5 N anchored above it. Calculate the percentage of the sphere volume above the water surface, if the rope breaks and the sphere rises to the surface coming to rest.

Solution

 

 

 

 

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