Question

Horse does 200 lb while pulling a sled for 3 mi .how much work does the horse do?

Answer 1

Let's convert the quantities in SI units first.
The force exerted by the horse is

`F=200 lb=889.6 N`
and the distance covered is

`d=3 mi=4828 m`
Therefore, the work done by the horse is equal to the product between the force applied and the distance:

`W=Fd=(889.6 N)(4828 m)=4.29 \cdot 10^6 J`