Question

Calculate the work done in lifting 200 kg of water through a vertical height of 6 metres
(g = 10 m/s)
(A) 5000 J
(B) 12000 J
(C) 25000 J
(D) 15000 J​

Answer 1

Answer:

• $\bf\pink{(C)\:12000\:J}$

Explanation:

Given :-

• $\sf\red{Mass = 200 \ kg}$
• $\sf\orange{Gravity = 10 \ m/s}$
• $\sf\green{Height = 6 \ m}$

Need to find :-

• $\sf\blue{Work \ done}$

Formula required :-

• $\sf\purple{Work \ done = Mass \times Gravity \times Height}$

Solution :-

$\to\:\:\sf\red{Work \ done = Mass \times Gravity \times Height}$

$\to\:\:\sf\orange{Work \ done = 200 \times 10 \times 6}$

$\to\:\:\sf\green{Work \ done = 2000 \times 6}$

$\to \:\ \sf\blue{ Work \ done = {\bf{\blue{1200\:J}}}}$

• Hence, $\bf\green{(B)}$ is the correct option.