Problem: A hollow, plastic sphere is held below the surface of a freshwater lake by a cord anchored to the bottom of the lake. The sphere has a volume of 0.660  m3 and the tension in the cord is 2120  N.a) Calculate the buoyant force exerted by the water on the sphere.b) What is the mass of the sphere?c) The cord breaks and the sphere rises to the surface. When the sphere comes to rest, what fraction of its volume will be submerged?

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A hollow, plastic sphere is held below the surface of a freshwater lake by a cord anchored to the bottom of the lake. The sphere has a volume of 0.660  m3 and the tension in the cord is 2120  N.
a) Calculate the buoyant force exerted by the water on the sphere.
b) What is the mass of the sphere?
c) The cord breaks and the sphere rises to the surface. When the sphere comes to rest, what fraction of its volume will be submerged?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Buoyancy & Buoyant Force concept. You can view video lessons to learn Buoyancy & Buoyant Force. Or if you need more Buoyancy & Buoyant Force practice, you can also practice Buoyancy & Buoyant Force practice problems.

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Based on our data, we think this problem is relevant for Professor Oerter's class at GMU.