## MOI question Again

### Ian

Posted 03 November 2005 - 07:00 PM

Hi i would appreciate any help. Thanks

A ferris wheel rotates in a verticle plain about a horozontal axis. (all mass concentrated at outside)

MOI of epty wheel. = 8.8*10^5 kgm^2
Passenger mass per chair = 200 kg
No. of chairs = 16.

**There were other parts to the quesiton but i can't do e)**

e) Calculate the maximum and minimum force acting on a 50kg passenger when the wheel is kept rotating at its maximum speed.

I would have thought it was the same because the central force would be constant but apparently not

Thanks again

Ian

### waitingforan_alibi

Posted 07 November 2005 - 08:44 PM

hi

the centripetal force is constant, but the resultant force changes. the resultant force acting on a person sitting in a chair at the top is given by T = centripetal force + weight whereas the resultant force at the bottom is the central force minus the weight..... cant be bothered doing the calculation just now but i hope that helped anyway