Chapter 11, Problem 3P

Determine the n- and t-components of the force F which is exerted by the rod AB on the crank OA. Evaluate your general expression for F = 118 N and (a) e = 30°, B = 25° and (b) e = 21°, B = 29° Answers: (a) Fn= i N, F: = i N (b) Fn = i N. F:= N

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The 0.6 m uniform slender bar has a mass of 5 kg. Two springs 1 and 2 having stiffness k, = 80 N/m and k₂= 45 N/m respectively are attached at end B of the slender bar. A 20 kg mass is suspended through a rope of negligible weight at the other end as shown. If a counter-clockwise moment M = 10 N. m is applied on the bar when it is at rest in the horizontal position, determine the angular velocity (₂) of the slender bar when it has rotated 30° couterclockwise. Note: Both springs always remain vertical because of the roller supports shown and are unstretched when the bar is horizontal. (Include any diagrams needed to support your solutions) 201 0 10 Km 04M A-80 N/m 45 N/m O 06m

Based on Problem 5-87 from the textbook. Both pulleys are fixed to the shaft and as the shaft turns with constant angular velocity, the power of pulley A is tramsitted to pulley B. Determine the horizontal tension T in the belt on pulley B and the x, y, z components of reaciotn at the journal bearing C and thrust bearing D. The bearings are in proper alignment and exrt only force reactions on the shaft. F₁ = 70 N F2=80 N Unique Values for F 300 mm F3 = 40 N 8= 44 44° 250 mm 200 mm F₁ F2 80 mm A 150 mm B

The pumping unit is used to recover oil. When the walking beam ABC is horizontal, the force acting in the wireline at the well head is Fc = 250 lb. Determine the torque M which must be exerted by the motor in order to overcome this load. The horse-head C weighs 56 lb and has a center of gravity at Gc. The walking beam ABC has a weight of 130 lb and a center of gravity at GB, and the counterweight has a weight of 190 lb and a center of gravity at Gw. The pitman, AD, is pin connected at its ends and has negligible Figure 1 of 1 5 ft 6 ft 1 ft GB 70 G20 250 Ib 3 ft 2.5 ft Part A Determine the torque M which must be exerted by the motor. Express your answer to three significant figures and include the appropriate units. HA ? Value M %3D Units Submit Request Answer 國

When the 0.05 kg T-shaped body, which has a height of 80 mm and is 120 mm wide, is in the position shown, the torsional spring at O is pre-tensioned to exert a 0.75 Nm clockwise couple on the body. Determine the force P required to break contact at C. The body is in a vertical plane, so the weight does have an influence. What is the moment of the weight of the body about point O?

The pumping unit is used to recover oil. When the walking beam ABC is horizontal, the forceacting in the wireline at the well head is 250 lb. Determine the torque M which must beexerted by the motor in order to overcome this load. The horse-head C weighs 60 lb andhas a center of gravity at Gc. The walking beam ABC has a weight of 130 lb and a centerof gravity at GB, and the counterweight has a weight of 200 lb and a center of gravity atGW. The pitman, AD, is pin connected at its ends and has negligible weight.

The Crane consist of 3 parts. W1=1800 kg acting from G1, W2=450 kg acting from G2 and W3=750 kg acting from GS. The Crane is iting a block of mass = 400 kg. a. Determine the reaction forces on each of the four wheels b. Determine the maximum weight that can be lifted without the crane tipping over. Please draw free body diagram

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