A pendulum with a cord of length r5 1.00 m swings in a vertical plane (Fig. P4.42). When the pendulum is in the two horizontal positions u590.08 and u5 2708, its speed is 5.00 m/s. Find the magnitude of (a) the radial acceleration and (b) the tangential accel-eration for these positions. (c) Draw vector diagrams to determine the direction of the total acceleration for these two positions. (d) Calculate the magnitude and direction of the total acceleration at these two positions.