You push a 325-N trunk up a 20.0 degree inclined plane at aconstant velocity by exerting a 211-N force parallel to the plane's surface.
a. What is the component of the trunk's weight parallel to theplane?
b. What is the sum of all forces parallel to the plane'ssurface?
c. What are the magnitude and direction of the friction force?
d. What is the coefficient of friction?