1. The problem statement, all variables and given/known data Calculate the work done by a 0.47N force pushing a 0.026kg pencil 0.26m against a force of friction of 0.23N. Knowns: F = 0.47N m = 0.036kg d = 0.26m Ff = 0.23N 2. Relevant equations Work = Force x Distance 3. The attempt at a solution Since I know work = f*d, I do w = 0.47N * 0.26m = 0.1222J I'm unsure of how to add friction into the calculation.