The answer is at the bottom, and yes the intention is to tell you that \theta is small. Also, I do not know the work to arrive at this answer, that is why I am asking.
Look at the picture attached. There is a mass on a drawbridge, which is inclined at half a meter. We have the Normal force, the coefficient of static friction, force of gravity and the force of friction pushing the mass upwards to the end of the draw bridge that is most inclined. We also have...