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Dynamics question, anyone care to help?? :( Watch

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    (Original post by eftio.gea)
    Name:  20160924_193205.jpg
Views: 26
Size:  499.1 KBI don't understand how to do number 6, anyone care to help? (((
    You may want to draw a free-body of all the forces acting on the small mass.

    There are two vertical forces acting on the small mass - frictional force and weight.

     \mu_s N - mg = 0

     N is the force exerted on mass m due to M.

    Write the Newton's second law in the horizontal direction for the small mass and the combined mass (m + M) respectively, then find N.
 
 
 
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