Meriam, Kraige & Bolton — Kinematics of Particles: Problem 2_109

2/109 If the 10-m/s speed of the previous problem is constant, determine the values of \(\ddot{r}\) and \(\ddot{\theta}\) at the instant shown. Note: Problem 2/108 states: "The sphere \(P\) travels in a straight line with speed \(v = 10 \text{ m/s}\). For the instant depicted, determine the corresponding values of \(\dot{r}\) and \(\dot{\theta}\) as measured relative to the fixed \(Oxy\) coordinate system." The diagram for 2/108 shows the sphere \(P\) at position \(x = 5 \text{ m}\) and \(y = 4 \text{ m}\), moving along a straight line that makes an angle of \(30^\circ\) with the vertical.