A 4kg eagle picks up a 75g snake and raises it 2.5 m from the ground to a branch. What is the work done to raise the bird’s own centre of mass to the branch? (Assume g = 10 m/s^2)(a) 100 J(b) 1.875 J(c) 118.75 J(d) 10 J
Correct choice is (a) 100 JEasy explanation: The work done to raise the bird’s own centre of mass to the branch depends only on the mass of the bird.Hence, the work done = (4 x 10 x 2.5) J = 100 J.