A slender 9 lb rod can rotate in a vertical plane about a pivot at B. A spring of constant k-30 lb/ft and of unstretched length 6 in. is attached to the rod as shown. The rod is released from rest in...
Include a constant counter clockwise moment of 40 lb.ft A slender 9-lb rod can rotate in a vertical plane about a pivot at B. A spring of constant k 30 lb/ft and of unstretched length 6 in. is attached to the rod as shown. Knowing that the rod is released from rest in the position shown, determine its angular velocity after it has rotated through 90 Fig. P17.18 24 in 5 in. 14in.
CLASS ID#: (3) GIVEN: (35 PTS) A slender 9-Ib rod AC can rotate in a vertical plane about a pivot at B. Attached to the rod at C is a spring with a stiffness of k=30 lb/ft and an unstretched length 6 inches. The rod is released from rest in the position shown. FIND: (A) (-10 Pts) The ANGULAR VELOCITY (c) of the rod AC after it has rotated through 90° (B) (-10 pts) The corresponding REACTION at the pivot...
The slender uniform bar with a weight of 9 lb can rotate in a vertical plane with respect to a bolt B. A spring of constant k = 40 lb / ft and an undeformed length of 5 in is connected to the bar as shown . If the bar is released from rest in the position shown, determine after rotating 90 °: A) The initial energy of the spring: B) Final spring energy: C) The velocity of the G...
A rod of mass M and length 2L is free to rotate in a vertical plane about an axis through O, as shown in the figure. The axis is normal to the plane of the paper. Three mosses M, M, and 2M are attached to the rod as shown. With the rod in a horizontal position, the system is released from rest. (a) Find the net torque on the rod about the axis of rotation immediately after the system is...
Problem 9 (15 points) A 20-lb slender rod AB is 5 ft long and is pivoted about a point O which is 1 ft from end B. The other end is pressed against a spring of constant k-400 lbin until the spring is compressed 2 in, and the rod is in a horizontal position. If the rod is released from this position, determine its angular velocity and the reaction at the pivot O as the rod passes through a thirty...
P3 (points) - The 15-kg slender rod is attached to a spring, which has an unstretched length of 3m. If the rod is released from rest when 0 = 45°, determine its angular velocity at the instant 0 = 60°. 5m B WWW 5m WW K= 50 N/m с
A rod of length 1.5 m is attached to a spring of spring constant, k as shown in Fig. II-1. The rod is released from rest when 0 = 0°. While reaching the position 0 = 90°, the angular velocity of the rod was 2.32 rad/s. If the mass of the rod is m kg, determine the value of the spring constant, k. Assume that the spring is unstretched when 0–0°. Take the mass of the rod (m) as 49kg...
A rod of length 1.5 m is attached to a spring of spring constant, k as shown in Fig. II-1. The rod is released from rest when 0 = 0°. While reaching the position 0 = 90°, the angular velocity of the rod was 2.32 rad/s. If the mass of the rod is m kg, determine the value of the spring constant, k. Assume that the spring is unstretched when 0–0°. Take the mass of the rod (m) as 49kg...
Sample Problem 6. The 30 kg slender rod is released from rest when θ-00 (when rod OA is in the horizontal position). The spring is unstretched at θ-00. A constant clockwise moment of 10 N-m is applied to the rod. A force, P, of 20 N is applied and is always perpendicular to the rod. Determine the angular velocity of the rod when θ- 750. (Use the work-energy or conservation of energy method). 2 m 10 N-mm k80 N/m 1.5...
4. The pendulum in Figure 4 consists of a 10 lb sphere of radius 1.0 f and a 5 lb slender rod of length 2.0 ft. Determine: (10 pts) the angularacceleration of the pendulum immediately after the string is cut and the reaction at the pin support O a. b. (10 pts) Using Work-Energy determine the angular velocity of the pendulum as it swings through the vertical position and the reaction at the pin O at that instant. BC 1...