Question

Humming birds and bees are similar in how they fly in that they use an elastic rotational torsion, K to return the wing. Calculate and compare the ratio of this torsion to the mass of the wing, K/m for the two cases of a bee and a humming bird. For this, consider a wing to be like a single mass at the end of a light bar that undergoes rotation due to a coiled spring. Take the wing length and frequency to be 5cm and 50 Hz for a humming bird, and 1 cm and 250 Hz for a bee.

ANS: 16m.Hz

Answer 1