Forces and Friction Flashcards
1
Q
How is friction (Fᵣ) related to the normal reaction force?
A
Fᵣ ≤ μR (μ = coefficient of friction)
Fᵣ = μR at limiting equilibrium of the object slipping
2
Q
How do you find the reaction force on a pulley?
A
2T x cos(1/2 x angle between tensions)
3
Q
In a hinged static rigid body question, which direction does the resultant reaction force act?
A
Opposite to the direction of tension/thrust
