QUESTION 36 An old 78 rpm record rotates through an angle of 320 as it slows down uniformly from 78.0 rpm to 22.8 rpm. What is the magnitude of the angular acceleration of the record? O 109 rads? O 6.50 radis? O 234 rads? O 835 rad? O 46 radis? QUESTION 28 A uniform rod is 2.0 m long. It is hinged to a wall at its left end, and held in a horizontal position at its right end by a vertical very light string, as shown in the figure. What is the angular acceleration of the rod at the moment after the string is released if there is no friction in the hinge? String Hinge Rod Wallp O 14 radis? O 15 rads? O 11 radis? O 33 radis? O t cannot be calculated without knowing the mass of the rod

QUESTION 36 An old 78 rpm record rotates through an angle of 320 as it slows down uniformly from 78.0 rpm to 22.8 rpm. What is the magnitude of the angular acceleration of the record? O 109 rads? O 6.50 radis? O 234 rads? O 835 rad? O 46 radis? QUESTION 28 A uniform rod is 2.0 m long. It is hinged to a wall at its left end, and held in a horizontal position at its right end by a vertical very light string, as shown in the figure. What is the angular acceleration of the rod at the moment after the string is released if there is no friction in the hinge? String Hinge Rod Wallp O 14 radis? O 15 rads? O 11 radis? O 33 radis? O t cannot be calculated without knowing the mass of the rod