Friction pinning a block on another block

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    Block Friction
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The discussion revolves around calculating the minimum horizontal force required to prevent a smaller block from slipping down a larger block, given their respective masses and the coefficient of static friction between them. The smaller block weighs 36 kg, while the larger block weighs 98 kg, with a frictionless surface beneath it. Participants note the absence of a figure that is crucial for visualizing the problem. Additionally, there is an emphasis on the necessity of posting an attempt at solving the problem to facilitate constructive feedback. The conversation highlights the importance of understanding the forces at play in this friction-related scenario.
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Homework Statement



The two blocks (m = 36 kg and M = 98 kg) in the figure below are not attached to each other. The coefficient of static friction between the blocks is µs = 0.48, but the surface beneath the larger block is frictionless. What is the minimum magnitude of the horizontal force vector F required to keep the smaller block from slipping down the larger block?
 
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hmm, where's the figure? and also you are supposed to post an attempt to the solution..
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
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Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
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