The property of force

[Steven Wang]

I have a problem, in Newton's second law F=m*a in inertial frame. In the accelerated frame a mass should be affected by a inertial force, but the force in the original inertial frame don't change, so real force is just like the temperature and will be the same in different frames?

 

[Doc Al]

Yes, the real forces are the same in any frame. But inertial pseudo-forces only appear when viewing motion from a non-inertial frame.

 

[Steven Wang]

Thank you !

 

[Bob S]

Yes, the real forces are the same in any frame. But inertial pseudo-forces only appear when viewing motion from a non-inertial frame.

If I were in a NASA centrifuge and viewing a ping pong game in the Earth's inertial frame (neglecting coreolis forces), would the game look the same if I were in an inertial frame, and the game were being played in the centrifuge?