Ch 6. Structures st Multimedia Engineering Statics 2-D Trusses: Joints 2-D Trusses: Sections 3-D Trusses Frames and Machines
 Chapter 1. Basics 2. Vectors 3. Forces 4. Moments 5. Rigid Bodies 6. Structures 7. Centroids/Inertia 8. Internal Loads 9. Friction 10. Work & Energy Appendix Basic Math Units Sections Search eBooks Dynamics Statics Mechanics Fluids Thermodynamics Math Author(s): Kurt Gramoll ©Kurt Gramoll

 STATICS - CASE STUDY Introduction Work Bench Tools Click to view movie (855k) An owner has forgotten the combination to an old lock. In order to remove the lock, he will need to use a pair of bolt-cutters. What is known: A force of 45 lb is applied on each handle. The dimensions of the bolt-cutters are: Bolt-Cutter Dimensions Problem Description Click to view movie (93k) Question If 45 lb of pressure on each handle is required to cut the lock, what is the total force exerted at point Q? Approach Use symmetry to simplify the problem. Disassemble the tool and label the known and unknown forces acting on each segment. Identify two-force members Identify joints common to multiple members. Solve using the equations of equilibrium.