1. The problem statement, all variables and given/known data An object with a mass of m = 4.80 kg is attached to the end of a string wrapped around a reel of radius R = 0.230 m and mass M = 3.00 kg. The reel is a solid disc. The suspended object is released from rest 1.90 m above the floor. http://imgur.com/ElfqPSX a) Determine the tension in the string. b) Determine the acceleration of the object. c) Determine the speed with which the object hits the floor. 2. Relevant equations [itex]\tau[/itex] = I [itex]\alpha[/itex] T = m(g - a) E = (0.5)(I)([itex]\varpi[/itex])2 3. The attempt at a solution mg = [itex]\tau[/itex] = I [itex]\alpha[/itex] mg = I [itex]\alpha[/itex] mg = (1/2)(MR2)([itex]\varpi[/itex] mg = (1/2)(MR2)(a/R) mg = (1/2)(MR)(a) a = (2mg)/(MR) a = ((2)(4.8)(9.8))/((3)(0.23)) a = 136.34 m/s2 There is no way this is right. This is one of the many methods I have tried and all the values were ridiculously high so I am posting a question here as a last resort.