A person of mass 60 kg wants to lose 5 kg by goingup and down a 10 m high stairs. Assume he burns twice as much fat while going up than coming down. If 1 kg of fat is burnt on expending 7000 kilocalories, how many times must he go up and down to reduce his weight by 5 kg? Work done in moving up = mgh Work done in moving down =(mgh)/(2) Total work done =(3)/(2) mgh = (3)/(2) xx 60xx 10xx10 N number of trips

A person of mass 60 kg wants to lose 5 kg by goingup and down a 10 m h

1.	A person of mass 60 kg wants to lose 5 kg by goingup and down a 10 m high stairs. Assume he burns twice as much fat while going up than coming down. If 1 kg of fat is burnt on expending 7000 kilocalories, how many times must he go up and down to reduce his weight by 5 kg? Work done in moving up = mgh Work done in moving down =(mgh)/(2) Total work done =(3)/(2) mgh = (3)/(2) xx 60xx 10xx10 N number of trips
Answer» <html><body><p></p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :`5xx7000 <a href="https://interviewquestions.tuteehub.com/tag/xx-747671" style="font-weight:bold;" target="_blank" title="Click to know more about XX">XX</a> <a href="https://interviewquestions.tuteehub.com/tag/10-261113" style="font-weight:bold;" target="_blank" title="Click to know more about 10">10</a>^(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>) xx4.2J = 60xx15 xx 10 xx N` <br/> `N =(21xx 7xx10^(6))/( 9000)= (147)/(<a href="https://interviewquestions.tuteehub.com/tag/9-340408" style="font-weight:bold;" target="_blank" title="Click to know more about 9">9</a>)xx 10^(3) =16.3 xx 10^(3)` times</body></html>