James pulls a rope and he has a mass of 77 kg. He pulls 20 m of the rope and does 40 N×m of work on the rope. What was the force he put on the rope to pull it up?

Question

Quizplus · Accepted Answer

In physics, work is done on an object when energy is transferred to that object. Work is always measured in Nxm (pronounced Newton meters)The equation used to find the constant force acting on a particle is
Work Done = Acting Force × Distance.
W = F x d
If we want to find the force, we must isolate force by dividing both sides by distance:
W/d = Fd/d
W / d = F
Force = W / d
The work is 40 Nxm
The distance is 20 m
Force = 40 Nxm / 20 m = 2 N

James Pulls a Rope and He Has a Mass of 77