Gravity is 9.8
Normal Force is the sum of Fy=ma=0
Fn+Fty-Fg=0,
Fn=mg/Ftsin30,
or
Fn+Ftsin30=Fg
Newton's Laws & Vectors (about 10 minutes)
http://www.youtube.com/watch?v=eMVzf...eature=related
you utilise vectors, if you wish to determine
horizontal acceleration when a force is applied to something at an angle.
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