Calculate the upthrust on a spherical ball of volume 4.2 x 10\(^{-4}\)m\(^{3}\) when totally immersed in a liquid of density 1028kgm\(^{-3}\)
A
5.2N
B
4.3N
C
3.0N
D
2.4N
Verified Correct Answer: B.
Physical Principles & Numerical Solution
Upthrust(Force) = volume of object x density of liquid x g = V x \(\rho\) x g
U = 4.2 x 10\(^{-4}\) x 1028 x 10 \(\approxeq\) 4.3N
Source: WAEC / JAMB / NECO Classroom Archive (Record #70529)