Question

How much work does it take to raise a `7 kg` weight `8 m`?

Answer 1

`"548.8"`

Explanation:

`"Work = Change in Potential energy"`

`W = U_f - U_i`

`W = "mgh"_f - "mgh"_i`

`W = "mg"(h_f - h_i)`

`W = "7 kg" × "9.8 m/s"^2 × ("8 m" - "0 m")`

`W = "548.8 Joule"`