Question

How much work would it take to push a `1 kg` weight up a `1 m` plane that is at an incline of `pi / 4`?

Answer 1

The work is `=6.93J`

Explanation:

The work done to push the object up the plane is equal to the gain in potential energy.

The height of the plane is

`h=1*sin(pi/4)=sqrt2/2m`

The mass of the object is `m=1kg`

The acceleration due to gravity is `g=9.8ms^-1`

The potential energy is

`PE=mgh=1*9.8*sqrt2/2=6.93J`