1. The problem statement, all variables and given/known data A 70cm diameter wheels accelerates uniformly from 160 rpm to 280 rpm in 4.00s. Determine: a) it's angular acceleration, and b) the radial and tangential components of the linear acceleration of a point on the edge of the wheel 2.00s after it has started accelerating a=? w2= 280rpm w1= 160rpm t = 4.0s d= .7m 2. Relevant equations a = w2-w1 / t 3. The attempt at a solution I used that equation for part a, with a= 280rpm - 160rpm /4.0s and got a= 30 , but I don't feel that is right. Is there a better equation I could have used?