Answer:
0.18
Explanation:
Draw a free body diagram. There are 3 forces on the block:
Weight force mg pulling down,
Normal force N pushing up,
Friction force Nμ pushing against the motion.
Sum of forces in the y direction:
∑F = ma
N − mg = 0
N = mg
Therefore, the friction force is:
f = Nμ
f = mgμ
Plugging in values:
8.13 N = (4.6 kg) (9.8 m/s²) μ
μ = 0.18
