Site hosted by Angelfire.com: Build your free website today!
Main Desktop Lessons Desktop Review Desktop Lab Desktop Chart Desktop Search

    

54.
There is a force of 50.0 N on the 75.0 cm string.  What is the velocity of the 300. g ball?

A.     3.54 m/s                   C.   12.5 m/s
B.    11.2 m/s                    D.   125 m/s
       
                         mv2                     Fc r                 50.0 kg m s -2 x 0.750 m
Fcentripetal = ----------  =>  v = (--------) 1/2  =  (-----------------------------------) 1/2  =  11.2 m/s
                          r                          m                              0.300 kg