The coefficient of friction are µs = 0.4 and µK = 0.3 between all surfaces in contact. Determine the smallest force P required to start the 30 kg block moving if cable AB (a) is attached as shown (b) is removed

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rvc · Answer

need help with these three questions

michele_laino · Answer

sorry, my word has crashed, can you make a sketch of your exercise, please?

rvc · Answer

wait please

rvc · Answer

attachment

michele_laino · Answer

part (b) the cable is removed
In this case total friction force, acting on composed block is:
$${\mu _s}\left( {{m_A} + {m_B}} \right)g$$
where $\mu_s$ is the friction coefficient between the composed block and the plane, whereas $m_A$ and $m_B$ are the masses of the two blocks

michele_laino · Answer

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