Sliding friction as the resistance created by any two objects when sliding against each other. This friction is also known as kinetic friction and is defined as the force that is needed to keep a surface sliding along another surface.
The equation for sliding force includes the coefficient of sliding friction times the normal force.
FS = μSFn
Where,
FS = force of sliding friction
μS = Coefficient of sliding friction
Fn = normal force
Solution
Given
u=10ms−1
s=12m
v=0
Find out
We have to determine the coefficient of sliding friction
Solution
By third equation of motion,
v2=u2−2as
On substituting the known values we get
0=(10)2−2×a×12
0=100 -24a
100=24a
a= 100/24
a= 4.17ms2
Coefficient of sliding friction is given by the formula above
FS = μSFn
μS =Fn / FS
= a/g
4.17/10
= 0.417
Answer
The coefficient of friction = 0.417