Question

help please






If it took 80 N-m of work to move an object 4 m, how much does the object weigh (in newtons)?

200 N
20 N
320 N
.25 N

Answer 1

it would be 320 newtons

Answer 2

Hooke's Law:
\(\color{#000000 }{ \displaystyle {\rm F}=kx }\)
\(\color{#000000 }{ \displaystyle {\rm F}=80\color{grey}{\rm \left[N / m\right]}\cdot 4 \color{grey}{\rm \left[ m\right]}=320\color{grey}{\rm \left[N\right]}}\)

Answer 3

Indeed, that was right!