A) \[\text{12}.\text{89}\times \text{1}{{0}^{\text{3}}}\text{kg}\]
B) \[\text{2}.\text{45}\times \text{1}{{0}^{\text{3}}}\text{kg}\]
C) \[\text{6}.\text{45}\times \text{1}{{0}^{\text{3}}}\text{kg}\]
D) \[\text{9}.\text{89}\times \text{1}{{0}^{\text{3}}}\text{kg}\]
Correct Answer: A
Solution :
Work done against gravity = (mgh) 1000 in lifting 1000 times \[=\text{1}0\times \text{9}.\text{8}\times \text{1}{{0}^{\text{3}}}\] \[=\text{9}.\text{8}\times \text{1}{{0}^{\text{4}}}\]Joule 20% efficiency is to converts fat into energy. \[[\text{2}0%\text{of3}.\text{8}\times \text{1}0\text{7J}]\times (m)=\text{9}.\text{8}\times \text{1}{{0}^{\text{4}}}\] (Where m is mass)\[\text{m}=\text{12}.\text{89}\times \text{1}{{0}^{\text{3}}}\text{kg}\]
You need to login to perform this action.
You will be redirected in
3 sec
