The small crane is mounted along the side of a pickup bed and facilitates the handling of heavy loads. When the boom elevation angle is q = 40°, the force in the hydraulic cylinder BC is 7 kN, and this force applied at point C is in the direction from B to C (the cylinder is in compression). Determine the moment of this 7 kN force about pivot point O assuming counterclockwise is positive. Express your answer in units of N-m.

The small crane is mounted along the side of a pickup bed and facilitates the handling of heavy loads. When the boom elevation angle is q = 40°, the force in the hydraulic cylinder BC is 7 kN, and this force applied at point C is in the direction from B to C (the cylinder is in compression). Determine the moment of this 7 kN force about pivot point O assuming counterclockwise is positive. Express your answer in units of N-m.

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

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter2: Basic Operations With Force Systems

Section: Chapter Questions

Problem 2.29P: A moment of 50lbft about O is required to loosen the nut. Determine the smallest magnitude of the...

See similar textbooks

Similar questions

k-i The tongs are used to grip the ends of the drilling pipe P. If a torque (moment) of Mp = 900 lb· ft is needed at point P to turn the pipe, determine the cable force F that must be applied to the tongs. Set 0 = 40°. (1 ft = 12 in.) 6 in. Mp 43 in. For question (Q2) above, if 0 = 80°, what do you think the cable force will be? (Circle one) A) increased B) decreased C) still the same! 6 in. Mp 43 in.
1. the tow truck's front wheels will belifted off the ground if the moment of the load W about the rear axle exceeds the moment of 3000N weight of the truck. Determine the largest w that may be safely applied 2. the flat plate shown in the figure is acted on by the three couples. replace the three couples with two forces, one acting along the line OP
Calculate the moment MO of the 190-N force about the base point O of the robot. The moment is positive if counterclockwise, negative if clockwise.Assume F = 190 N, a = 600 mm, b = 420 mm, c = 230 mm, θ= 56°, and ϕ= 30°.
The top viewv of a revolving entrance door is shown. 0.8 m Two persons simultancously approach the door and exert forces of equal magnitudes as shown. If the resulting moment about the door pivot axis at a is 25 N .m, determine the force magnitude F from the following answers which of them is correct: 0.8 m 15° O M= 16.18 N.m O M= 0 N.m O M= 18.16 N.m M = 181.16 N.m O M= 161.8 N.m
The crowbar is subjected to a vertical force of P = 27 lb at the grip, whereas it takes a force of F = 160 lb at the claw to pull the nail out. The crowbar contacts the board at point A. Find the moment of the force P about point A and the moment of the force F about point A.
Resolve the 360-N force into components along the cables AB and AC. Use α = 55° and β= 30°.
3-39 Find the resultant of the two forces and the couple shown, given that P= 20 N, P2 = 30 N, and C= 1000N - mm.
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
F- 10N 250 mm The 10-N force is applied to the handle of the hy- draulic control valve as shown. Calculate the mo- 60 17.5 mm ment of this force about point O.
The cable AB prevents bar OA from rotating clockwise about the pivot O. If the cable tension is 820 N, determine the n- and t-components of this force acting on point A of the bar.
Determine the x, y, z components of reaction at the fixed wall A. The 150N force is parallel to the z axis and the 200N force is parallel to the y axis. Determine the x, y, z components of the moment of reaction at the fixed wall A.
2 - The 200-N force produces a torque (moment) of 40 N.m about the axis of the bolt in order to tighten the hexagonal nut . Find the forces between the smooth jaws of the wrench and the 20 mm 200 N nut if contact occurs at the corners A and B of the hexagon.