An object weighs 22 kg in water and 30kg in air. what is the upthrust exerted by the liquid on the object.
[g = 10 ms2]
[g = 10 ms2]
-
A.
50 N -
B.
520 N -
C.
220 N -
D.
80 N
Correct Answer: Option D
Explanation
upthrust = weight in air – weight in liquid = 30 x 10 – 22 x 10 = 300 – 220 = 80 N