Pushing a box up an inclined plane

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SUMMARY

The discussion focuses on calculating the efficiency of an inclined plane used to push a 60-pound box up a 16-foot long ramp that rises 4 feet high. The efficiency formula is defined as efficiency = useful work output / total work input. The user has calculated the total work output as 480 ft.lb but is uncertain about the total work input due to variables such as the speed of the box and the presence of friction.

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  • Understanding of basic physics concepts such as work and efficiency
  • Familiarity with the equations for work (w = fd)
  • Knowledge of inclined plane mechanics
  • Ability to analyze forces acting on objects
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  • Research the impact of friction on inclined plane efficiency
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tuffshorty
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I need to calculate the efficiency of a inclined plane if a 60 pound box is being pushed up it... The inclined plane is 16 feet long (The plane itself, not the base) and it is raised up 4 feet high.


Homework Equations



efficiency= useful work output/total work input
w=fd
w= work
f= force
d= distance

The Attempt at a Solution



I have The total amount of work you are putting out is 480 ft.lb ... but I am not sure how to get the total work input...
 
Physics news on Phys.org
Is the box being pushed up at a constant speed, or is it accelerating?
 
Is there friction that needs to be accounted for?
 

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