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The buoyancy force is generated only due to the weight of the core inside the mould.(a) True(b) FalseI have been asked this question at a job interview.Enquiry is from Forces Acting on Cores and Mold topic in chapter Mold and Mold Making of Casting-Forming-Welding I

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Right ANSWER is (B) False

The best explanation: In the mould, the core experiences the static pressure as well as the weight of the core. When these two worked together in combination, then there is a lifting of the core due to the FORCE which is called as buoyancy force. This force acts onto the core because of the DENSITY difference of the molten metal and the core material USED.



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