Question

How much work does it take to lift a `30 kg` weight `3/2 m`?

Answer 1

`"Work" = F*d`, where `F` is the force required to lift it, and `d` is how high it is lifted.

Explanation:

The force required to lift an object is its weight (the force of gravity)

Weight: `F_g=mg`

I will use 10 for g, you may be using 9.8 or 9.81 in your class.

`F_g=30 kg *10N/(kg)=300N`

`W=Fd`
`W=300N*3/2m`
`W=450J`