How much work would it take to push a # 8 kg # weight up a # 5 m # plane that is at an incline of # pi / 4 #?
The work done against the force of gravity is 277 joules.
The reason work must be done in this situation is that an applied force must act against gravity.
Work done on against (or by) a force is defined by
You need to notice that in a problem such as this, the angle of the incline (and therefore of
That said, this time, both angles would be
The work done is