Work on Moving a 186kg Refrigerator

[Jonathan Teas]

Homework Statement

A mover loads a 186kg refrigerator into a moving van by pushing it up a 10.0m friction free ramp at an angle of inclination of 11.0degrees. How much work is done by the mover
thats all that was given.

Homework Equations

w=(F)(d)...work is =force times displacement

The Attempt at a Solution

i don't know how to account for the angle

 

[Delphi51]

The work is done overcoming gravity. You could find the component of the gravitational force that is in the direction of the movement and use the work formula.

Since there is no friction, there is no loss of energy and you could find the answer with an energy approach. Or you could consider other ways of accomplishing the same work other than going up the ramp, simplifying the work calculation.