An uncontrolled 850 kg car strikes squarely a motorway crash cushion in which the caris brought to rest by suctessively crushing steel barrels. The length of the crashcushion is 5.9 m, and the magnitude Fof the force required to crush the barrels as afunction of the distance r the car has moved into the cushion is given by85KN (0 <2S 1.7m)130kN (1.7 < r < 4.4m)170kN (4.4 sI5 5.9m)a)Decermine an expression for the work done by the force F as a function of r.b)If the car strikes the crash cushion with a velocity of 138 km/h, determine thedistance the car will move into the cushion before it comes to rest and themaximum deceleration of the car. Determine the maximum velocity with which the car can strike the cushion so that itwill not hit the wall behind the cushion.

Answered: Image /qna-images/answer/18e9722f-a7c8-4704-be0f-e1ac1f135389.jpg

An uricontrolled 850 kg carstrikes squarely a motorway crash cushion in which the car is brought to rest by successively crushing steel barrels. The length of the crash cushion is 5.9 m, and the magnitude F of the force required ta crush the barrels as a function of the distance r the car has moved into the cushion is given by 85KN (0

An uricontrolled 850 kg carstrikes squarely a motorway crash cushion in which the car is brought to rest by successively crushing steel barrels. The length of the crash cushion is 5.9 m, and the magnitude F of the force required ta crush the barrels as a function of the distance r the car has moved into the cushion is given by 85KN (0

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

For the beams loaded as shown in the figure, determine the reactions R1 and R2
A composite beam is constructed using a steel plate (10 mm x 165 mm) with two wood beams (75 mm x 165 mm) on either side. The wood and steel are securely fastened to act as a single beam. The beam is subjected to a positive bending moment M₂ = 7.05 kN m. Steel- Wood = 11 GPa and Es = 200 GPa. (Enter your answers in MPa. Use the deformation sign convention. Use the general theory for Calculate the maximum tensile and compressive stresses in the wood and steel if Ew composite beams described in the textbook.) maximum tensile stress in wood MPa maximum tensile stress in steel MPa maximum compressive stress in wood MPa maximum compressive stress in steel MPa
For the built-up shape shown in the figure, determine: a. The elastic section modulus considering bending about the horizontal axis. (ANS 518 x 103mm3). b. The elastic section modulus considering bending about the vertical axis (ANS 133 x 103mm3). c. The plastic section modulus about the horizontal axis in x103 mm3 (ANS 572) d. The plastic section modulus about the vertical axis in x103 mm3.(ANS 0.20)
A high performance racing plane is to have an aileron control rod made out of unidirectional carbon fibre tubing with the following material properties: elastic modulus E = 90 GPa and compressive failure stress OF,comp= 600 MPa. In order to avoid parts of the internal wing structure the control rod is required to have a bend at the tip as shown in the figure. The rod is L = 400 mm long with an inner diameter of 8 mm and an outer diameter of 10 mm. The length of the bent portion of the rod is = 40 mm . The servo applies a maximum compressive or tensile force of F= 200 N on one end of the control rod as shown in the diagram. The end at which the loading is applied can be considered to be free and the other end of the control rod can be considered to be fixed. Consider the case where the servo applies a compressive force on the tip of the control rod: (i) (ii) X Find the maximum compressive stress in the rod and the maximum transverse deflection of the rod at B. Find the maximum…
A vehicle of mass m moves along a horizontal road with uniform motion and speed vo. At time t = 0, a constant breaking FB starts acting on it. Derive the general equation of breaking distance S which the car travels during stopping.
C6a please help me with the answer and full solution
Q23.
For the W410××85, A36 steel beam, determine the moment Mo (in kN⋅⋅m) so that the deflection at the center of the beam is 0.5 mm downward. Express your response in 3 significant digits.
Consider the timber beam shown below. The beam is made out of southern yellow pine, with an allowable bending stress of ?all= 2700 psi. The modulus of elasticity is E = 2,400 ksi. The maximum allowable deflection in the beam is 0.25 inches. A 1.5 kip/ft 6 ft 4 in. h B (a) What are the boundary conditions for this beam? (b) Determine the equation for the moment diagram using statics. (c) Determine the depth of the beam necessary to meet the allowable bending stress requirement.
As a construction engineer, you are asked to evaluate the maximum allowable vertical shear Vmax that may act on the hollow stainless-steel beam having a rectangular cross section as shown in Figure Q4. Discuss the effect of geometry on the shear stress developed in the beam | 20 mm y 350 mm V 10 mm- -10 mm 1 30 mm E 200 mm
Coulomb’s theory of earth pressure is based on (A)the theory of elasticity (B) the theory of plasticity (C) empirical rules (D)wedge theory
Consider a composite shaft of steel and aluminium having length L and fixed at one of the ends as shown in figure. Steel O Al 1.5 d t The hollow shaft of steel has outer diameter as 1.5 d and inner diameter as d, while the solid shaft of aluminium has the diameter as d. If the composite shaft is subjected to torque, T then the torque resisted by steel shaft is % (rounded off to one decimal place) of the applied torque. Assume modulus of rigidity of aluminium is one third of modulus of rigidity of steel. [Take G₁ = 3 GAL]