Tiêu đề Chapter 7.pdf ✅

1. Work - Work done by a constant force W = ՜ F . Δr = F. Δr. cos θ → Work is the application of a force through a distance W = න xi xf Fx. dx = the area of the shaded rectangle - A force that varies with position

WFg = න Fg. dr Ԧ = − න ri rf GMEm r 2 dr = GMEm 1 rf − 1 ri Work Done By Gravitational Force WFg = mgyi − mgyf