A semisubmersible, displacing 20,500 long...

Question 1 of 2707066636ee728f7522a1c518882

A semisubmersible, displacing 20,500 long tons, has vertical moments of 1,060,000 foot-long tons. What is the change in KG if 500 long tons are discharged from a VCG of 120 feet?

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Question 1 of 27070

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A semisubmersible, displacing 20,500 long tons, has vertical moments of 1,060,000 foot-long tons. What is the change in KG if 500 long tons are discharged from a VCG of 120 feet?

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🔍 Key Concepts

• KG (height of center of gravity) and how total vertical moments relate to it • Effect on KG when weight is removed above or below the existing KG • Using the formula: New KG = New Total Moments / New Displacement

💭 Think About

• How do you compute the original KG from the given displacement and total vertical moments? • When a weight is discharged, what happens to both the total displacement and the total vertical moments? Increase, decrease, or stay the same? • Is the change in KG measured from the original KG, and will it move upward or downward when weight is removed from a high VCG?

✅ Before You Answer

• First calculate original KG using: KG = (Total vertical moments) / (Displacement) • Then adjust total vertical moments by subtracting the moment of the weight removed (weight × its VCG) • Compute new KG with the new displacement and new total moments, and then find the difference between new and original KG to match one of the choices.