A force of 60N used to push a chair across a room does 300J of work in half a minute. How far does a chair move?
You have to know the friction force involved. Was the chair at constant velocity, or accelerating?
To find the distance the chair moves, we can use the work-energy principle, which states that the work done on an object is equal to the change in its kinetic energy. Since the chair starts from rest, the work done will be equal to the kinetic energy it gains.
The work done (W) is given as 300J, and the force (F) acting on the chair is 60N. In this case, the work done is equal to the force multiplied by the distance the chair moves (d).
So we have:
W = F * d
Plugging in the values:
300J = 60N * d
To find the distance (d), we divide both sides of the equation by the force (60N):
d = 300J / 60N
Now let's calculate:
d = 5 meters
Therefore, the chair moves a distance of 5 meters.