This option suggests dividing the force into small intervals. It does not provide a complete method for calculating work done because you also need information about the displacement.
This option suggests dividing the displacement into small intervals. While this approach is a step in the right direction, you still need to consider the force acting over those intervals.
This option correctly states that to find the work done by a variable force, you need to consider both the force and displacement into small intervals. You perform a series of small calculations to determine the work done over each interval and then sum them up to find the total work done.
Considering displacements at different angles does not directly address how to calculate work done by a variable force. It's important to focus on dividing both force and displacement into small intervals.
The correct statement is C. Both force and displacement into small intervals. To find the work done by a variable force, you need to consider both the force and displacement into small intervals, perform calculations for each interval, and then sum them up to find the total work done.