Question

A 60-cm-diameter, 300 g beach ball is dropped with a 4.0 mg ant riding on the top. The ball experiences air resistance, but the ant does not.

What is the magnitude of the normal force exerted on the ant when the ball's speed is 3.5 m/s?

Can you explain and show in detail how to get the answer.

^{$F_{drag}=\frac{1}{2} \rho v^{2}C_{D} A$}

What would rho and the drag coefficient be?

$A={\pi} (r^{2})$

$r=\frac{.6}{2}$

$v^{2}= (3.5m/s)^{2}$

$F_{normal}=\frac{(4*10^{-6})}{(4*10^{-6}+.3kg)} (F_{drag})$

I've tried using 1.2 kg/m³ as rho and .5 for the drag coefficient, where does 1.2 and .5 come from?

Answer 1

mtM 2, our or Spher Then N = 2. . (1.2. ) . (3.5) . 047 4XIo t02