1. The problem statement, all variables and given/known data A 24.6 g pebble is stuck in the thread of a 28.7 in tire. If the tire can exert an inward radial friction force of up to 19.3 N on the pebble, how fast will the pebble be travelling with respect to the center of the wheel when it flies out tangentiall? 2. Relevant equations a = v^2 / r 3. The attempt at a solution I got: 19.3 N = (m*v^2)/r => v^2 = (19.3 * r) / m = (19.3N * 0.36449 m) / 0.0246 kg = 16.9 m/s = final answer = INCORRECT ???? This problem is supposed to be easy, but I dont know what I'm doing wrong here. Anyone?