Question

How much work would it take to push a `14 kg` weight up a `2 m` plane that is at an incline of `pi / 6`?

Answer 1

I got: `137.2J`

Explanation:

Consider the diagram:

with `d=2m`.

The work `W` will be done against gravity (the weight `mg` of the object) to reach the eight: `h=2sin(pi/6)` (from trigonometry);
so we get:

`W=mg*h=(14*9.8)*(2sin(pi/6))=137.2J`