Hello all! I have a question on acclerating frames. The apparent weight of an object in an elevator that is accelerating upward is m(g+a), where g is gravity and a is the acceleration of the elevator. In my textbook they give an example of a crate placed on a scale at the equator. They want to find the apparent weight of the crate as the Earth rotates about its axis. They found the apparent weight to be m(g-(v^2)/r), the difference between the accleration due to gravity and the centripetal acceleration of Earths rotation. At first thought I assumed that the apparent weight would be more because both gravity and the centripetal force and pulling down on the crate. Why am I wrong to think this? Please help, and thank you everyone for all you help.