Question

How much work would it take to push a `5 kg` weight up a `2 m` plane that is at an incline of `pi / 3`?

Answer 1

I got: `85J`

Explanation:

Consider the diagram:

the work done `W` will be done against gravity to lift the weight at a height `h=2sin(pi/3)`, so we get that:

`W=mg*h=(5*9.8)*[2sin(pi/3)]=84.87~~85J`