A block weighing 6.8 N requires a force of 2.9 N to push it along at constant velocity.
What is the coefficient of friction for the
surface?
Let Ff = Force of Friction
Let C = Coefficient of Friction
Let N = Normal force
Ff = CN
The required force to just get a block moving along at a constant velocity will also be equal to the force of friction (Ff) if there is nothing else acting on the horizontal plane. N can be calculated using the block's weight. So;
C = N/Ff
0.44N
To find the coefficient of friction for the surface, we need to use the formula:
Coefficient of friction = Force of friction / Normal force
In this case, we know the force required to push the block along at a constant velocity is 2.9 N. This force is equal to the force of friction, because it counteracts the applied force. The normal force is equal to the weight of the block, which is given as 6.8 N.
So, the coefficient of friction can be calculated as follows:
Coefficient of friction = Force of friction / Normal force
= 2.9 N / 6.8 N
Dividing the force of friction (2.9 N) by the normal force (6.8 N), we find:
Coefficient of friction = 0.426
Therefore, the coefficient of friction for the surface is approximately 0.426.