a wooding block of mass 7.6kg rest on a rough horizontal surface if the surface is 8N calculate the coefficient of friction
Wb = m*g = 7.6kg * 9.8N/kg = 74.48 N. =
Wt. of block.
Fs = 8 N ?
Fs = us*Fv = 8 N.
us*74.48 = 6
us = 0.081
To calculate the coefficient of friction between the wooden block and the rough surface, you need to use the formula:
Coefficient of friction (μ) = Force of friction (Ff) / Normal force (N)
First, let's calculate the normal force (N), which is the force exerted by the surface on the block.
Normal force (N) = Mass (m) x Gravity (g)
Given that the mass of the wooden block is 7.6 kg and the acceleration due to gravity (g) is approximately 9.8 m/s², we can calculate the normal force:
N = 7.6 kg x 9.8 m/s²
N ≈ 74.48 N
Now, we can calculate the force of friction (Ff) acting on the wooden block, which is given as 8 N.
Ff = 8 N
Finally, we can substitute the values into the formula to find the coefficient of friction:
μ = Ff / N
μ = 8 N / 74.48 N
μ ≈ 0.107
Therefore, the coefficient of friction between the wooden block and the rough surface is approximately 0.107.