Homework Answers
a)Wx =w*sin theta
=325 N*sin 20 deg
=111.1565466 N
Wx =111 N
b)
since the object is traveling at a constant velocity,the sum of the forces are zero.
c)
Since the kinetic friction force needs to balance the component of the weight, the
magnitude is equal to 111 N, the direction is opposite i.e -111 N
d)
normal force N =w*cos theta
coefficient of friction =111N/(325 N*cos 20 deg)
=0.36
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