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January 26, 2015

January 26, 2015

Posted by **Alejandra** on Saturday, October 2, 2010 at 2:07pm.

- physics -
**kast**, Sunday, October 3, 2010 at 12:05amFnormal= 19sin30+mg=38.9 N

a)friction = u Fnormal = 0.25x38.9 = 9.73 N

b) a =( 19cos30 -Friction)/m

=2.24m/s/s

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