Problem: 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 exttip{vec{F}}{F_vec} is necessary for the component exttip{F_{mit x}}{F_x} parallel to the ramp to be 90.0 N?(b) How large will the component exttip{F_{mit y}}{F_y} perpendicular to the ramp then be?

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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?

The man is dragging a trunk up the loading ramp of a movers truck with a pulling force F that is 30.0 degrees above the ramp. The ramp itself makes an angle of 20.0 degrees with the horizontal.

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Based on our data, we think this problem is relevant for Professor Voronine's class at USF.