Pulley problem that is most likely easier for you than for me.

AI Thread Summary
The problem involves two blocks of equal mass connected by a string over a pulley, with one block on a 30-degree ramp and the other hanging off the edge. To determine the static friction coefficient that prevents the block on the ramp from moving, free-body diagrams for both blocks should be drawn to analyze the forces acting on them. The system must remain static, implying that the net force is zero. Forces should be considered in both parallel and perpendicular directions to the ramp for clarity. The discussion suggests that the answer may be simply 1, though further analysis is needed to confirm this.
psome51
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Homework Statement



2 blocks that have the same mass are connected by a string and passed over a pulley. The angle made by the horizontal plane and the ramp is 30 degrees. 1 of the blocks is dangling off the edge of the ramp while the other block is placed on the ramp. If neither block moves, what is the static friction coefficient that keeps the block on the ramp from moving?

Homework Equations



where to even start?

The Attempt at a Solution



So far, I just thought through the problem. I'd appreciate the help!
 
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My suggestion to you in first attempting this problem is to draw free-body diagrams for each of the two masses. You want to see all the forces that would be acting on each of the masses.

If the system is to be static (not moving) what would you expect the net force to be?
 
Right! thanks a bunch!
 
Here's another hint: when considering the forces acting on the block resting on the plane it will be easier to consider the forces in the directions parallel to and perpendiclar to the plane as opposed to simply in the x- and y- direction which you may be accustomed to.
 
so is the answer just 1?
 
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...

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