Hello all!(adsbygoogle = window.adsbygoogle || []).push({});

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.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Accelerating frames

**Physics Forums | Science Articles, Homework Help, Discussion**