Tension and Friction problem, i

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The discussion focuses on solving a tension and friction problem using basic physics principles. The user shares images of their work but encounters technical issues with their scanner. Another participant confirms that the force equations for the first body are set up and solved correctly, indicating a tension of 78N. However, they point out a potential error in the user's method for calculating the friction coefficient (μ) and the second tension (T2). Clarification on these calculations is needed for further assistance.
zm87
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I need help with this problem using simple physics. Thanks :).



You have to copy the url and paste it in your browser or it won't work. Thanks.

Here: http://zm87.tripod.com/physics.jpg
 
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Well, how far did you get? Show us your work and you'll get some help.
 
Ok i have work but i my computer isn't recognizing my scanner anymore hold on
 
here: http://zm87.tripod.com/physics3.jpg copy and paste into browser

i don't even know if i did it right
 
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I agree with Ambitwistor: you set up the force equations for each body correctly. The equation for the first body is solved correctly (T1= 78N). But I don't see how you went on to solve for μ and T2. I suspect an error there.
 
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
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