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Posted by on Monday, January 10, 2011 at 11:00pm.

table is lifted to backpack starts to slide off. If table makes a 21 degree angle with floor, what is coefficient of static friction between backpack and the table?

  • science - , Tuesday, January 11, 2011 at 3:38am

    (mu_s)*M*g cos 21 = M*g*sin 21

    mu_s = sin21/cos21 = tan21 = 0.384
    is the static coefficient of friction

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