A hollow, plastic sphere is held below the surface of afreshwater lake by a cord anchored to the bottom of the lake. Thesphere has a volume of 0.650 m3 and the tension in the cord is 830N.
A) Calculate the buoyant force exerted by the water on thesphere.
B) What is the mass of the sphere?
C) The cord breaks and the sphere rises to the surface. When thesphere comes to rest, what fraction of its volume will besubmerged?
