posted by stephanie
Suppose a 300–g kookaburra (a large kingfisher bird) picks up a 77.0–g snake and raises it 2.70 m from the ground to a branch. How much work did the bird do on the snake?
How much work did it do to raise its own center of mass to the branch?
F = M*g = 0.077 * 9.8 = 0.755 N.
Work = F*d.