Question
Question: The force required to just move a body up the inclined plane is double the force required to just pr...
The force required to just move a body up the inclined plane is double the force required to just prevent the body from sliding down the plane. The coefficient of friction is µ. The inclination q of the plane is –
A
tan–1 µ
B
tan–1(µ/2)
C
tan–1 2µ
D
tan–1 3µ
Explanation
Solution
Force required to stop sliding
F1 = (mg sin q – µ mg cosq)
Force required to pull upwards
F2 = (mg sinq + µ mg cos q)
F1 = 2F2