Answer to Question 4

F = mg = 6phrv

 

F = 1 × 10^-3 kg × 10 m/s = 0.01 N

 

0.01 = 6 × p × 0.36 × 0.5 × 10^-3 × v

 

v = 0.01 ÷ 3.39 × 10^-3 = 2.95 m/s