1. The problem statement, all variables and given/known data A rod extends from a vertical wall at an angle of 27º from the horizontal. A 2.5-kg lamp is mounted at the end of the rod. After John throws his 300-g winter coat over the lamp, what is the magnitude of the tension in the rod? The answers choices are: A) 30N B) 70N C) 27N D) 22N 2. Relevant equations F = ma 3. The attempt at a solution Since the only force acting on it is $F_t$ tension is equal to T = mg/sin(theta) So when I plug in my knowns I get T = (9.8*2.8) (2.5kg + 300 g (300g = .3kg)/(sin(27)) which is equal to 28.691... which is not one of the answer choices. Am I using the wrong formula?