Question 1182844
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(a)  This force is  50*sin(a) = {{{50*(3/5)}}} = 30 newtons.    <U>ANSWER</U>


     This force is OPPOSITE to the ROLLING force and is directed parallel to the inclined plane.




(b)  This force is  50*cos(a) = {{{50*(4/5)}}} = 40 newtons.   <U>ANSWER</U>

     This force is called "the REACTION force". It is PERPENDICULAR to the inclined plane.
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Solved.  &nbsp;&nbsp;&nbsp;&nbsp;// &nbsp;&nbsp;&nbsp;&nbsp;All question are answered.


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In my solution, &nbsp;&nbsp;" a " &nbsp;&nbsp;is the angle of the inclined plane to horizontal.


&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;sin(a) = {{{3/5}}}.  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;cos(a) = {{{sqrt(1-sin^2(a))}}} = {{{sqrt(1-(3/5)^2)}}} = {{{4/5}}}.