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Mechanical principles engineering question help??
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I have to fin the total upthrust in KN exerted on the emergancy beacon, when it is otally imersed in the ocean.
(Assume that the density of the water is 1026kg/m^3 and that the value for g is 9.81m/s^2
What i did (which i am not sure if its right) is;
Upthrust For
Cylindryical part of float = pgah (P is density) = (1026) x (9.81) x (A) x (1.20) A = (1.20 x 0.80) = 0.96m^2 so pgah (P is density) = (1026) x (9.81) x (0.96) x (1.20) = 115.94KN
Cone part of float = pgah (P is density) = (1026) x (9.81) x (A) x (0.90) A = (0.90 x 0.80) = 0.72m^2 so pgah (P is density) = (1026) x (9.81) x (0.72) x (0.90) = 67.12KN
Total Upthrust = 183.04KN
Is this correct??
Thanks for any help!!