M D B- L+- +- 1.5L 1.5L-1.5L - 0.5L 0.5L A frame consists of two members, AD and DBC that are connected with an internal pin at D. A and B are rollers and C is a pinned external support. What is the value of the support reaction By? Up is positive, down is negative. Input your answer with one decimal place. P=5.7 lb, M=27.9 Ib*ft, L=3.6 ft

M D B- L+- +- 1.5L 1.5L-1.5L - 0.5L 0.5L A frame consists of two members, AD and DBC that are connected with an internal pin at D. A and B are rollers and C is a pinned external support. What is the value of the support reaction By? Up is positive, down is negative. Input your answer with one decimal place. P=5.7 lb, M=27.9 Ib*ft, L=3.6 ft

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter1: Tension, Compression, And Shear

Section: Chapter Questions

Problem 1.9.9P: A lifeboat hangs from two ship's davits. as shown in the figure. A pin of diameter d = 0.80 in....

See similar textbooks

Similar questions

A lifeboat hangs from two ship's davits. as shown in the figure. A pin of diameter d = 0.80 in. passes through each davit and supports two pulleys. are on each side of the davit. Cables attached to the lifeboat pass over the pulleys and wind around winches that raise and lower the lifeboat. The lower parts of the cables are vertical and the upper parts make an angle a =15° with the horizontal. The allowable tensile force in each cable is 1800 lb, and the allowable shear stress in the pins is 4000 psi. If the lifeboat weighs 1500 lb, what is the maximum weight that can be carried in the lifeboat?
Repeat Problem 11.2-14 using L = 12 ft, ß = 0.25 kips/in., ßRl= 1.5ßL2, and ßR2= 2 ßR1.
A pinned-end strut of aluminum (E = 10,400 ksi) with a length L = 6 ft is constructed of circular tubing with an outside diameter d = 1 in. (sec figure). The strut must resist an axial load F = 4 kips with a factor of safety n = 2.0 with respect to the critical load. Determine the required thickness t of the tube.
An aluminum [E = 10,000 ksi] control rod with a circular cross section must not stretch more than 0.22 in. when the tension in the rod is 2100 lb. If the diameter of the rod is 0.372 in., determine the maximum length of the rod.
A vertical load of (1.5C) kN is applied on a cantilever truss as shown in Figure 2. The truss is attached to the vertical wall and supported by bearing at A and B. For system stability, the bearing at A and B exerts forces Av, Ah, and Bh. If forces Av and (1.5C) kN make a counter clockwise couple and forces Bh and Ah make a clockwise couple, Solve for the magnitude of supporting forces. Note C= 4740
9-8kN stress/force on the AB rope holding the base station shown below There are. In order for the net force at point A of this base station to be downward What is the stress/force that should be on the AC rope? A) 5556 N C) 7356 N B) 8200 N D) 3648 N E) 1228 N
(5) A gas engine valve spring is loaded to 35kgf when the valve is closed & 52kgf hen the valve is open. The valve lift is 8mm. The outside diameter is to be from 38mm~45mm, & the permissible stress is 413N/mm2 . Determine: (a) the wire & outside diameter; (b) the number of effective coils; (c) the free length when it is squared & ground.
The figures below show a formed sheet-steel bracket. The total distributed load “W” on the bracket is 20 kN. It is secured to the support with two grade 5.8 bolts. The joint constant is C=0.183, and the bolts are preloaded to 70 percent of the proof load. The dimensions of the top flange are the same as the mounting flange.a) Find the external loads (P1 and P2) carried by upper and bottom bolts respectively if both resist the moment?b) Find the upper bolt diameter by ignoring direct shear load and determine/select a standard metric bolt size with a pitch for a design factor of 1,4.c) Is there any need to enlarge 5 mm dia. holes in the bracket?
Two plates each with thickness of 18 mm are bolted together with 6 – 20mm ø bolts forming a lap connection. Bolt spacing are as follows: X1 = 50 mm, X2 = 120 mm and X3 = 100 mm FvRivet = 130 MPa. Calculate the the pemissible tensile load P under the following conditions. a. Based on the effective net area. b. Based on block shear. c. Based on the safe value of P.
A right angled bell crank lever is to be designed to raise a load of 5 kN at the short arm end. The lengths of short and long arms are 100 and 450 mm respectively. The lever and the pins are made of steel 30C8 (S = 400 N/mm2). And the factor of safety is 5.the permissible bearing pressure on the pin is 10 N/mm². The lever has a rectangular cross section and the ratio of width to thickness is 3:1. The length to diameter ratio of the fulcrum pin is 1.25:1. Calculate (i) The diameter and length of the fulcrum pin (ii) The dimensions of the cross section.
A ladder with a uniform cross-section has a length of 4.80-foot long. It weighs W Ib. It is arranged such that one end is on the ground and the other against a vertical wall. The angle of triction at all contact surtaces is 20 degrees. What is the value of the coefficient of triction? What is f, in terms of variable Na? What is the normal force at A in terms of variable W? Answer in three decimal places
1. This arm is attached to a wall on the left. The right end is free hanging. Each section is 1.9m wide and 3.6m high. If the force at the end of the arm is F = 170.0N, what is the force in member 2? Use a positive number if it is in tension and a negative number if it is in compression. 2. This arm is attached to a wall on the left. The right end is free hanging. Each section is 1.2m wide and 3.0m high. If the force at the end of the arm is F = 150.0N, what is the force in member 9? Use a positive number if it is in tension and a negative number if it is in compression.