A man is dragging a trunk up the loading ramp of a moving truck. The ramp has a slope angle of 20.0°, and the man pulls upward with a force whose direction makes an angle of 30.0° with the ramp in the figure.
(a) How large a force is necessary for the component parallel to the ramp to be 90.0 N?
(b) How large will the component perpendicular to the ramp then be?
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