A steel ball (density ρsteel = 7200 kg/m³) is placed in an upward moving liquid AI (density ρal = 2360 kg/m³, viscosity μAl = 1 × 10^-3 Pa.s and Reynolds number = 5 × 10⁵). The force (F) exerted on the steel ball is expressed as F = fπR²(ρAl V²/2)
where, f is friction factor (= 0.2), v is the velocity of liquid AI and R is the radius of steel ball.
The force exerted on the steel ball is