Question

A 30 kg sled is pulled at constant speed with a horizontal rope for a distance of 450 m. The coefficient of friction is 0.15. Find the work done by the applied force on the rope.

it looks like this means we have to find the applied force in newtons before we can solve this. how does one find the applied force?

Answer 1

since the sled is not accelerating, the net force acting on it must be zero.

So, since the friction is .15*(30*9.8), that is equal to the force acting on the sled.

Answer 2

still not getting the right answer. help solve this?!

Answer 3

work done=forceapplied*distance
=.15*30*9.8*450 Joules

Answer 4

thanks !!!!