Why does spinning make you dizzy but linear motion doesn't?

[bodhi]

probably a stupid question! on force.

when we spin round and round we feel dizzy,when we move in front we dont,now considering in both cases a force is acted on body,one force has an effect on your brain where as other does,so what is so special in this circular force that makes brain dizzy,where as linear force dosent.

 

[jtbell]

what is so special in this circular force that makes brain dizzy,where as linear force dosent.

Blame your semicircular canals:

http://en.wikipedia.org/wiki/Semicircular_canal

 

[bodhi]

Thanks for that answer,i didnt realize the source is biology rater than physics,thank you for clearing that doubt.