3. The pruning mechanism of a pole saw is shown as it cuts a branch S. For the particular position drawn, the actuating cord is parallel to the pole and carries a tension of 30 lb. Determine the shearing force P applied to the branch by the cutter, the total force supported by the pin at E and the force exerted by member CD. The force exerted by the light return spring at C is small and may be neglected. Ans. P = 20 20 30 lb RE = 20 D CD = B AB = 1", BC = ED = 3", EB = DC = 4", DF = 6"

3. The pruning mechanism of a pole saw is shown as it cuts a branch S. For the particular position drawn, the actuating cord is parallel to the pole and carries a tension of 30 lb. Determine the shearing force P applied to the branch by the cutter, the total force supported by the pin at E and the force exerted by member CD. The force exerted by the light return spring at C is small and may be neglected. Ans. P = 20 20 30 lb RE = 20 D CD = B AB = 1", BC = ED = 3", EB = DC = 4", DF = 6"

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

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter6: Beams And Cables

Section: Chapter Questions

Problem 6.63P: The cable of the suspension bridge spans L=140m with a sag H=20m. The cable supports a uniformly...

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