una cuerda de 200 cm de longitud tiene una masa de 500g cual es la tensión de la cuerda que se requiere para producir una velocidad de onda de 120 cm/s

Abird flies directly overhead from where you stand at an altitude of 300.0 m and at a speed horizontal to the ground of 20.0 m/s. the bird has a mass of 2.0 kg. the radius vector to the bird makes an angle \thetaθ with respect to the ground. the radius vector to the bird and its momentum vector lie in the xyxy-plane. what is the bird’s angular momentum about the point where you are standing?