Casting of molten metal is important in many industrialprocesses. Centrifugal casting is used for manufacturing pipes,bearings and many other structures. A veriety of sophisticatedtechniques have been invented. A cylindrical enclosure is rotated rapidly and steadily about a horizontal axis. Molten metal is poured into therotating cylinder and then cooled, forming the finished product.Turning the cylinder at a high rotation rate forces the solidifying metal strongly to the outside. Any bubbles are displace toward the axis, so unwanted voids will not be present in the casting. Sometimes it is desirable to form a composite casting, such as fora bearing. Here a stron steel outer surface is poured, followed byan inner lining of special low- friction metal. In some applications a very strong metal is given a coating of corrosion-resistan metal. Centrifugal casting results in stronbonding between the layers. Suppose that a copper sleeve of iner radius 2.10 cm and outer radius 2.20 cm is to be cast. To eleminate bubbles and give high structural intgrity, the centripetal acceleration of each bit of metal should be 100g what rate of rotation is required? State theanswer in revolutions per minute.

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Casting of molten metal is important in many industrialprocesses. Centrifugal casting is used for manufacturing pipes,bearings and many other structures. A veriety of sophisticatedtechniques have been invented. A cylindrical enclosure is rotated rapidly and steadily about a horizontal axis. Molten metal is poured into therotating cylinder and then cooled, forming the finished product.Turning the cylinder at a high rotation rate forces the solidifying metal strongly to the outside. Any bubbles are displace toward the axis, so unwanted voids will not be present in the casting. Sometimes it is desirable to form a composite casting, such as fora bearing. Here a stron steel outer surface is poured, followed byan inner lining of special low- friction metal. In some applications a very strong metal is given a coating of corrosion-resistan metal. Centrifugal casting results in stronbonding between the layers.  Suppose that a copper sleeve of iner radius 2.10 cm and outer radius 2.20 cm is to be cast. To eleminate bubbles and give high structural intgrity, the centripetal acceleration of each bit of metal should be 100g what rate of rotation is required? State theanswer in revolutions per minute.

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Casting of molten metal is important in many industrialprocesses. Centrifugal casting is used for manufacturing pipes,bearings and many other structur

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