An object of mass m and volume v, is totally immersed in a liquid of density p…

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

Correct Answer: Option C

Explanation

Tension = upthrust on object

= weight in air – weight i liga

= mg – pvg

= (m – pv)g

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