W3.08
STATIC EQUILIBRIUM ∑F=0-KEY
Find the normal force, frictional force & vthe minimum coefficient of static friction.
F
µmin = f vNEEDED
Fnormal
[1]
F = 50 N
[2]
F = 10 N
50 N
100 N
µ≠0
36.87°
µ≠0
FN = 50 N Ff = 10 N, µmin = 0.2
FN = 70 N Ff = 40 N, µmin = 0.571
[3]
[4]
F = 50 N
F1 = 50 N
36.87°
10 N
53.13°
40 N
60 N
µ≠0
FN = 80 N Ff = 30 N, µmin = 0.375
[5]
µ≠0
FN = 40 N Ff = 40 N, µmin = 1.0
FN = 100 N Ff = 120 N, µmin = 1.2
[6]
µ≠0
100 N
F2 = 80 N
µ≠0
100 N
F = 20 N
36.87°
36.87°
FN = 80 N Ff = 60 N, µmin = 0.75
FN = 80 N Ff = 40 N, µmin = 0.5
[7]
[8]
100 N
F = 100 N
µ≠0
36.87°
FN = 80 N Ff = 40 N, µmin = 0.5
µ≠0
F = 50 N
100 N
53.13°
FN = 100 N Ff = 50 N, µmin = 0.5