A disc of radius R = 20.0 cm, mass M = 2.5kg is mounted on a frictionless, horizontal axle through O. A block of mass m = 5.0 kg is attached to a light string wrapped around the disc. When the block is released from rest from a height h = 2.25m above the floor, it accelerates downward to hit the floor. 1. In terms of vf, calculated in the question above, what is the value of the tangential acceleration of a point P on the rim of the disc when m hits the floor?
a. v2f / 4.5 m
b. v2f / 0.2 m
c. v2f / 0.225s
2. A disc of radius R = 20.0 cm, mass M = 2.5kg is mounted on a frictionless, horizontal axle through O. A block of mass m = 5.0 kg is attached to a light string wrapped around the disc. When the block is released from rest from a height h = 2.25m above the floor, it accelerates downward to hit the floor. In terms of vf, calculated above, what is the value of the radial acceleration ac of a point on the disc 10.0 cm from the center of the disc when m hits the floor?
a. v2f / 0.1m
b. v2f / 0.4m
c. v2f / 0.8m