Comments on: How much work in joules does it take to push a 100kg wheelchair up a 10m rise with a 5% grade? http://www.alldrugreviews.com/2010/05/how-much-work-in-joules-does-it-take-to-push-a-100kg-wheelchair-up-a-10m-rise-with-a-5-grade/ Online Drugs and Medicine Reviews by Patients Sun, 25 Dec 2011 19:32:34 +0000 hourly 1 http://wordpress.org/?v=3.0.5 By: Nishit V http://www.alldrugreviews.com/2010/05/how-much-work-in-joules-does-it-take-to-push-a-100kg-wheelchair-up-a-10m-rise-with-a-5-grade/comment-page-1/#comment-7433 Nishit V Wed, 26 May 2010 09:09:00 +0000 http://www.alldrugreviews.com/2010/05/how-much-work-in-joules-does-it-take-to-push-a-100kg-wheelchair-up-a-10m-rise-with-a-5-grade/#comment-7433 a) Work done is independent of the gradient W = mgh = 100*9.8*10 = 9800 Joules The speed is constant Component of weight in the direction of the slope = 100 / cos 85 degree so force should exaclt balance this weight => F = 100 / cos 85 degree = 1147.35 Newton a) Work done is independent of the gradient

W = mgh = 100*9.8*10 = 9800 Joules

The speed is constant
Component of weight in the direction of the slope
= 100 / cos 85 degree

so force should exaclt balance this weight
=> F = 100 / cos 85 degree = 1147.35 Newton

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