For the bar of Prob. 2/135, determine the values of r and if the velocity of

Question:

For the bar of Prob. 2/135, determine the values of r¨ and θ¨ if the velocity of collar C is decreasing at a rate of 5 mm/s² at the instant in question. Refer to the printed answers for Prob. 2/135 as needed.

Data from Prob. 2/135

Rotation of bar OA is controlled by the lead screw which imparts a horizontal velocity v to collar C and causes pin P to travel along the smooth slot. Determine the values of r˙ and θ˙, where r = OP, if h = 160 mm, x = 120 mm, and v = 25 mm/s at the instant represented.