Meriam, Kraige & Bolton — Kinematics of Particles: Problem 2_139

2/139 For the helicopter of Prob. 2/138, find the values of \(\ddot{R}\), \(\ddot{\theta}\), and \(\ddot{\phi}\) for the radar tracking device at \(O\) at the instant when \(h = 100\text{ m}\). Refer to the printed answers for Prob. 2/138 as needed. Reference Problem 2/138: A helicopter starts from rest at point \(A\) and travels along the indicated path with a constant acceleration \(a\). If the helicopter has a speed of \(60\text{ m/s}\) when it reaches \(B\), determine the values of \(\dot{R}\), \(\dot{\theta}\), and \(\dot{\phi}\) as measured by the radar tracking device at \(O\) at the instant when \(h = 100\text{ m}\).