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Q.7 A ladder of 4m length weighing 200 N is placed as shown in figure. 14 = 0.25 and pp = 0.35 .Calculate the minimum horizontal force, ‘P’ to be applied at A to prevent slipping. 600 N A wheel of 2 m diameter rolls without slipping on a flat surface. The centre of the wheel is moving with a velocity 4 m/s towards the right. Determine the angular velocity of the wheel and velocity of points P, Q and R on the wheel. OP = 0.6m, OP makes 30° angle with negative x-axis. Q P fo R 1) Two wheels are attached to the ends of the rod AB as shown in figure. Determine angular velocity of rod AB and velocity of end B for the position shown. aw AB=S5m B LS 13) A shot is fired with a bullet with an initial velocity of 20 m/s from a point 10 m in front ofa vertical wall 5 m high. Find the angle of projection with the horizontal to enable the shot to just clear the wall. Also find the range of shot where the bullet falls on ground. 2) Wheel is rolling along a straight path without slipping. Determine velocity of point A & B. w = 4rad/sec , Vo=8 ms. 
