A vertical axis rotational apparatus shown is the apparatus weused in Laboratory. The apparatus has low friction, low massrotating bracket that holds a disk. The disk has a diameter of 25.4cm and a mass of 4.33 kg. The hub around which the string iswrapped is 4.76 cm in diameter. The apparatus is accelerated by astring wrapped around a circular hub at the center of the base ofthe apparatus. The string passes horizontally over a low frictionlow mass pulley to a hanging mass which fall toward the floor whenreleased. When the hanging mass is released from rest the diskspins through 4.0 rotations before hitting the floor The time fromrelease to when the mass strikes the floor is 6.2 seconds. What isthe angular acceleration of the apparatus using radian measure?Assume constant acceleration. Include units. Use the followingformat for writing powers positive s^2 or negative s^(-2).
