Question

How much work would it take to push a `4 kg` weight up a `4 m` plane that is at an incline of `pi / 6`?

Answer 1

The work is `=78.4J`

Explanation:

The height of the plane is

`h=4sin(1/6pi)=4*1/2=2m`

The work done is equal to the potential energy gained up the plane.

The mass is `=4kg`

The acceleration due to gravity is `=g=9.8ms^-2`

`W=mgh=4*9.8*2=78.4J`