Question
Suppose a 350-g kookaburra (a large kingfisher bird) picks up a 75-g snake and raises it 2.5 m from the ground to a branch. (a) How much work did the bird do on the snake? (b) How much work did it do to raise its own center of mass to the branch?
1. $1.8 \textrm{ J}$
2. $8.6 \textrm{ J}$
Solution Video