1. The problem statement, all variables and given/known data A crankshaft with a diameter of 3.0 cm , rotating at 2300 rpm comes to a halt in 1.30 s . What is the tangential acceleration of a point on the surface of the crankshaft? 2. Relevant equations W=v/r Wf=Wi+@t @=At/r 3. The attempt at a solution -2300 rpm=138000r/s=13006.19m/s -v=13006.19m/s -r=.015m -t=1.3 -W=867079 -@=666983 -@10004.7 the answer is completely wrong.