The discussion revolves around determining the minimum force required to initiate movement in a system involving two masses (M1 and M2) and friction. The context includes forces acting on wheels associated with these masses.
Some participants have provided clarifications about the forces acting on the wheels, while others are exploring different aspects of the problem. There is an ongoing exchange of ideas, with no explicit consensus reached on the initial problem.
Participants express uncertainty about the forces acting on the wheels and the implications for the overall system. There is mention of a subsequent problem introduced by one participant, indicating a shift in focus.
Hello voliseq. Welcome to PF !voliseq said:Homework Statement
Determine the minimum value of the force F for which the systems start moving. Assume M1 = 1kg, M2 = 2kg, Us = 0.3.
Solution: F = 9; F = 6N
My problem is that i don't know the forces acting on wheel.
Homework Equations
The Attempt at a Solution
M1 :
F - T = 0
M1g - N = 0
M2:
Fr - T = 0
M1g+M2g - N(from mass 1 and mass 2) = 0
The only forces acting on the wheels are normal (vertical) forces. The wheels are free to rotate, so the horizontal forces acting on them are zero.voliseq said:
Chestermiller said:
Please try again, taking moments about the pin.voliseq said: