Subject: Formula to calculate the effort to pull a weight on wheels up an incline?

  Hi,
>        Can  you  advise  if  there  is  a  fairly simple formula that can
>    compute  the amount of effort needed to raise a weight load up various
>    encountered  inclines on  a two  wheeled cart with known wheel radius?
>    My  use  would  be  for  ramping  a  boat  on  a  sulky  by  hand  and
>    understanding the effort needed to do so after taking a measure of the
>    incline.   It would also help me understand what aids need be employed
>    as tire stops, pulleys, winches or perhaps motorized assists given any
>    given  incline.   For  this  tire  flex, bearing friction, and surface
>    changes   could   be   considered   constant,   Plenty  of  discussion
>    about wheel  impacts  on  inclines  but  have  yet  to  find anyway to
>    quantify  the  portion of load need for effort given an incline plane.
>    Can you advise what this fjormula might be?

Re: Formula to calculate the effort to pull a weight on wheels up an incline?