2. A pendulum has a length of 15 cm. It is displaced 5 cm from its equilibrium position and then released. Use the formula [30] T= 2nt [ (1/g)^ (12) ], where T is the period in second, I is the length of the pendulum in metres, and g is the acceleration due to the gravity, 9.8 m/s2. A function to model the horizontal position h(t) of the pendulum bob as a function of time is given by h(t) = A cos [(2nt) / T] a. Calculate the period of the pendulum. b. Determine the horizontal velocity of the pendulum. IE Equation Editor A - AT BIUSX X Paragraph Font Size = 27rsquareroot(1/g) 27rsquareroot0. 15 /9.8 0.248313 sec (t) = Acos27t/T dh/dt = -(27/T) x A sin 2nt/T