Gravitational Potential Energy K1

`K_1 = K_2 + U_(grav, 2) - W_(other) - U_(grav, 1) `

`(U_(grav, 1))"Initial Gravity Energy"`

`(U_(grav, 2))"Final Gravity Energy"`

`(W_(other))"Work by Other Force"`

`(K_2)"Final Kinetic Energy"`

University Physics 12th Edition, Chapter 7, Equation #7.7