Q. A cubical vessel of height 1 m is full of water. what is the amount of work done in pumping water out of the vessel?(Take g=10$ms^{- 2}$)
A) 1250 J
B) 5000 J
C) 1000 J
D) 2500 J
Explanation
(b) $V = I^{3} = 1m^{3}$
$m = 1 \times 1000 = 1000kg$
$W = mgh = 1000 \times 10 \times \frac{1}{2} = 5000\ J$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.