A 4.00-kg block rests on a 30.0° incline as shown in the figure.If the coefficient of static friction between the block and the incline is 0.700,what magnitude horizontal force F must act on the block to start it moving up the incline? 
A) 34.0 N
B) 51.1 N
C) 54.7 N
D) 84.0 N
E) 76.4 N
Correct Answer:
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