How can you figure out the work done by the frictional force if the friction is 80 Newtons against a horizontal force of 290 newtons. Is it simply subtracting 290 - 80 = 210?
i am not a physics whiz but yes my dad is a physics whiz that is how you do it. you ae right
Um. Not quite. Work is force times distance. To get the work done by friction just multiply the friction force times the distance it acts over.
To figure out the work done by the frictional force, you need to calculate the dot product of the friction force and the displacement.
The dot product is calculated as:
Work = Frictional Force * Displacement * cos(theta)
where theta is the angle between the frictional force and the displacement vector.
In this case, since the frictional force is acting against the horizontal force, the angle between them is 180 degrees (opposite direction).
So the work done by the frictional force would be:
Work = Frictional Force * Displacement * cos(180 degrees)
Now, let's substitute the given values:
Frictional Force = 80 Newtons
Displacement = unknown (not provided in the question)
Since the displacement is not given, we cannot calculate the exact work done by the frictional force. We need to know the displacement vector to calculate the work.
Therefore, we cannot simply subtract the frictional force from the horizontal force to find the work done by the frictional force.