How to slove physics question?

Posted on 2014-12-19 07:14:00 in Physics by GLEN

A block with mass M=7.50 kg is initially moving up the incline and is increasing speed with a=3.08 m/s2. The applied force F is horizontal. The coefficients of friction between the block and incline are ?s=0.443 and ?k=0.312. The angle of the incline is 25.0 degrees.

(a) What is the magnitude of the force F ?
N ( ± 0.2 N)

(b) What is the magnitude of the normal force N between the block and incline?
N ( ± 0.2 N)

(c) What is the magnitude of the force of friction on the block?
N ( ± 0.2 N)

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