A metal ball of weight W falls through a column of glycerine of viscosity V. If the ball experiences an upthrust U and terminal velocity is attained, then
A
W > U + V
B
W = U + V
C
W = U - V
D
W < U + V
Verified Correct Answer: B.
Physical Principles & Numerical Solution
When terminal velocity is attained, The equation of motion becomes
mg - V - U = 0
\(\therefore\) mg = W = U + V
Source: Myschool Past Questions Archive (Record #35526)