5 Question 5 Answer the following question about the Pteromys system Assume that a lift force f l f l of 10 N is generated by a wing with an area of 10cm2 and a speed of 10 ms According to the wing theory what is the lift force N of a wing made of the same material and with the same angle of attack if it has an area 5cm2 and a speed 20ms Input the number only Assume that the Reynolds number stays constant Hint refer to the original paper if necessary