A load of lumber of weight W is raised as shown by a mobile crane. At this instant, the wheel at His locked and the wheel at K is free to rotate. The external load W is attached via a hook to a cable that is supported by frictionless pulleys A and E, attached to boom ABC, and the cable is secured to a motorized winch under the hood. Boom ABC is supported by both boom BF and rod CD via hinge joints at B and C, respectively. The piston rod CD is also hinged at D and is used to change the angle of boom ABC by pivoting the boom about hinge B; at this instant, AB is horizontal and CD is vertical, as shown. The weight of the boom ABC and the weight of the vehicle body are 3kN (acting at 2.0 m from A, as shown) and 50kN (acting 2.0 m from H, as shown), respectively. All dimensions are in meters. 0.6 m 0.4 m -2.0 m- 0.3 m C A B FD 3 kN W 50 kN H 2.0 m -2.0 m - 0.5 m im 0.9 m

A load of lumber of weight W is raised as shown by a mobile crane. At this instant, the wheel at His locked and the wheel at K is free to rotate. The external load W is attached via a hook to a cable that is supported by frictionless pulleys A and E, attached to boom ABC, and the cable is secured to a motorized winch under the hood. Boom ABC is supported by both boom BF and rod CD via hinge joints at B and C, respectively. The piston rod CD is also hinged at D and is used to change the angle of boom ABC by pivoting the boom about hinge B; at this instant, AB is horizontal and CD is vertical, as shown. The weight of the boom ABC and the weight of the vehicle body are 3kN (acting at 2.0 m from A, as shown) and 50kN (acting 2.0 m from H, as shown), respectively. All dimensions are in meters. 0.6 m 0.4 m -2.0 m- 0.3 m C A B FD 3 kN W 50 kN H 2.0 m -2.0 m - 0.5 m im 0.9 m

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter4: Coplanar Equilibrium Analysis

Section: Chapter Questions

Problem 4.117P: The device shown is an overload prevention mechanism. When the force acting on the smooth peg at D...

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