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anonymous
 one year ago
In the figure, block 1 of mass m1 = 1.8 kg and block 2 of mass m2 = 1.4 kg are connected by a string of negligible mass. Block 2 is pushed by force Upper F Overscript rightarrow EndScripts of magnitude 18 N and angle θ = 34°. The coefficient of kinetic friction between each block and the horizontal surface is 0.16. What is the tension in the string?
anonymous
 one year ago
In the figure, block 1 of mass m1 = 1.8 kg and block 2 of mass m2 = 1.4 kg are connected by a string of negligible mass. Block 2 is pushed by force Upper F Overscript rightarrow EndScripts of magnitude 18 N and angle θ = 34°. The coefficient of kinetic friction between each block and the horizontal surface is 0.16. What is the tension in the string?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Will try answering this problem in a few hours after school. Just posted here in advance. Thank you for those who are willing to help. God bless mates~!

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.0here is the situation of your problem: dw:1440941027910:dw the equation of the motion of both objects, are: \[\Large \left\{ \begin{gathered} {\mathbf{F}} + {\mathbf{T}} + {{\mathbf{R}}_2} = {m_2}{\mathbf{a}} \hfill \\ {{\mathbf{R}}_1} + \left( {  {\mathbf{T}}} \right) = {m_1}{\mathbf{a}}\quad \hfill \\ \end{gathered} \right.\]

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.0developing those equation with respect to the coordinate system x,z as in the drawing above, we get: \[\Large \left\{ \begin{gathered} F\cos \theta + \left( {F\sin \theta + {m_2}g} \right)\mu  T = {m_2}a \hfill \\  \mu {m_1}g + T = {m_1}a \hfill \\ \end{gathered} \right.\] where a is the requested acceleration, and T is the tension of the string between the 2 objects dw:1440941667928:dw

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.0furthermore \mu is the coefficient of friction

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0hello I'm back sorry forgot to check this problem bc of school worksss. Will read your text thanks @Michele_Laino

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0is the force with an angle a compression force right? Not a tension

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'll draw a FBD via coordinate system

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1441155866872:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0anyone is my FBD right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I thought in block 1 the equation will be T1  F ?
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