0 votes
in Class-XI-PHYSICS by

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

1 Answer

0 votes
by

Correct choice is (a) 100 J

Easy 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.

Related questions

0 votes
asked Oct 6, 2021 in Class-XI-PHYSICS by Sandeepthukran
0 votes
asked Oct 5, 2021 in Class-XI-PHYSICS by Sandeepthukran
...