- #1
Alexstrasza
- 15
- 0
Homework Statement
The pulley system is stationary. What is the maximum and minimum mass of block B to keep the system stationary?
We know that:
Mass of A = 100 kg
Angle = 45 degrees
μ = 0.1
Homework Equations
F = ma
The Attempt at a Solution
I know that in order for the system to stay stationary the forces in both directions must be equal. I also know that the maximum mass of B is when the system almost slides to the left, and minimum is when it almost slides to the right.
I'm not sure how to use the equation for minimum or maximum.
I thought the equation for moving to the left direction would be:
(mass of B)(gravity) - T = T - sin(45)(mass of A)(gravity) - Force of friction
But then how would we find T? And is this the right equation for the maximum?