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.

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.

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 4.155P: Assuming that P=48000lb and that it may be applied at any joint on the line FJ, determine the...

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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.
20°
X20%
Ans.
P =
30 lb
20°
RE =
CD =
L75°
AB = 1", BC = ED = 3", EB = DC = 4
4;", DF = 6"

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