This is probably relating to questions where the force is applied at an angle to the direction in which an object is moving
I am second guessing the problem here but I assume you have seen work done equations as
The definition of work done is:
work done = force x distance moved in direction of force
If this relates to a problem along the following lines, such as "what is the work done on the object if the weight is pulled along in the horizontal direction by a distance S?"
Then in the above, the force can be resolved into a horizontal component (
Work done in the vertical direction is nil (no distance is travelled in the vertical direction) whereas work done in the horizontal direction would be
A more technically correct definition of work done is that it equals the dot product of two vectors, force and displacement. Hence:
The solution to this is
Does this help?