Question 14 The angular displacement O (in radians) of a pendulum swinging through a small angle with limited air resistance and internal friction can be Not yet approximated by the simple harmonic motion models 0 = a sinwt or 0 = a coswt. The period T (time required for one back-and-forth swing) is answered given by T = 2x -, where L is the length of the pendulum and g is the acceleration due to gravity. The maximum angular displacement lal and Points out of 8 6.25 positive angles are taken to the right of the center position. Write a model for the angular displacement O of the given pendulum after t seconds. Flag (Hint: Be sure to convert the initial position to radians.) question A 1.4-m pendulum initially at its left-most position of -40 . Use g = 9.8 m/sec2. Select one: O a. 0 = -cos (V7t) O b. 0 = 4 cos ( V7t) O c. 0 = 4cos (2V/7nt) O d. 0 = - - 45 cos ( VTxt )