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An object of mass m and volume v, is totally immersed in a liquid of...

Physics
JAMB 1980
An object of mass m and volume v, is totally immersed in a liquid of density p. The tension of a string holding it is
  • A. mg
  • B. (m + pv)g
  • C. (m - pv)g
  • D. pvg
  • E. [M/m-pv]g
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Correct Answer: Option C
Explanation
Tension = upthrust on object

= weight in air - weight i liga

= mg - pvg

= (m - pv)g
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