The discussion centers on determining the moment a block overcomes static friction when connected to a spring and subjected to a force. The critical condition for movement is established as the elastic force (Fs) exceeding the static friction force (Fs,f), leading to the equation Fs > μs mb g. The participants suggest using energy balance equations to analyze the system, specifically the work done by the applied force (F = 20 N) and the spring's potential energy. The final conclusion indicates that the displacement of the spring (x) must exceed 0.0491 m for the block to start moving.
PREREQUISITESStudents and professionals in physics, mechanical engineering, and applied mechanics, particularly those interested in dynamics and friction analysis in connected systems.
Check the evaluation. (Maybe you already caught this.)Thermofox said:##\sqrt {\frac {2~20~0.0491 - 200~(0.0491)^2} { \frac {21} 5 (0.3)^2}}## ##≈ 1,252~rad/s##