A constant horizontal pull of $8.50 \mathrm{~N}$ drags a box along a horizontal floor through a distance of $17.4 \mathrm{~m}$. (a) How much work does the pull do on the box? (b) Suppose that the same pull is exerted at an angle above the horizontal. If this pull now does $65.0 \mathrm{~J}$ of work on the box while pulling it through the same distance, what angle does the force make with the horizontal?