A baseball pitching machine “throws” baseballs with a horizontal velocity v0. Knowing that height h varies between 788 mm and 1068 mm, determine (a) the range of values of v0, (b) the values of ∝corresponding to h = 788 mm and h = 1068 mm.

17. Three stones A, B and C are projected with same speed. A is thrown upwards B is thrown horizontally & C is thrown downwards from a building. When the distance between stone A & C becomes 10 m, then distance between A and B will be - (A) 10 m (C) 5√2 (B) 5 m (D) 10√2

A post is supported by a ball-and-socket joint at O and cables BC and BD. A triangular distributed load runs from O to A as shown and has a maximum intensity of w = 36 N/m Length OA is 1.6 m and length OBis 2.5 m Other dimensions are given: h = 1.48 m l1 = 0.89 m ha = 0.97 m lb = 0.65 m D C, hz h1 l, 0 12 A В y W

(2) A 5 lb ball is attached to a 3 ft long rope and it rotates in a vertical circular path at a constant tangent velocity of 30 ft/s. (a) Determine the tension in the rope when the ball is at point A. (b) Determine the tension in the rope when the ball is at point B. B 3 ft A