Post-UTME Physics 2007 Objective — Question 3
Question 3 of 10 from the Post-UTME Screening (Post-UTME) Physics 2007 Objective paper, with the correct answer and a full explanation.
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A body of density 0.80kg/m^3 weighs 120N in air. It is suspended with a string with 1/3 of its volume immersed in a liquid of density 0.6kg/m^3, find the tension in the string(g=10ms^-2)
- A. 75N
- B. 65NCorrect
- C. 45N
- D. 35N
Explanation
Using the buoyancy principle with the given density ratio and immersed fraction, the tension works out closest to 65N; presented with some uncertainty due to unclear unit/value legibility in the scan.
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