Definition of work Ingredients: Force(F), displacement (Ar) Work W. of a constant force F acting through a displacement A r is F W=F△rcos0 0/△r Physics 121: Lecture 12, Pg 6Physics 121: Lecture 12, Pg 6 Definition of Work: Ingredients: Force ( F ), displacement (  r ) Work, W, of a constant force F acting through a displacement  r is: W = F  r cos   F  r Fr