Arectified triangular wave form is defined by the periodic function f(t) f(t + t) where a rectified triangular for 0 < t < fortt. 10 f(t) t - m a. find the fouricr scrics cxpansion of f(t) b. if f(t) represents the driving force on a lightly damped spring system, write down (without solving from first principles): (1.) the complementary solution, and (2,) the particular solution for the mass's position.

You are your friend move a new refrigerator into his kitchen. you apply a horizontal force of 252 n in the negative x direction to try and move the 56 kg refrigerator. the coefficient of static friction is 0.61. (a) how much static frictional force does the floor exert on the refrigerator? give both magnitude (in n) and direction. magnitude n direction (b) what maximum force (in n) do you need to apply before the refrigerator starts to move?