PROBLEM 4: In the figure shown, block A weighs 300 kN and block B is also 300 kN. Force P is applied to push the blocks forward. The coefficient of friction μ = 0.20 for both A and B. The blocks are connected by a solid strut attached to each block with frictionless pins. (a) what is the force on the strut, in KN? (b) what is the reaction at B, in kN? (c) what is the value of P, in kN, to prevent forward motion? 30° 60° B

PROBLEM 4: In the figure shown, block A weighs 300 kN and block B is also 300 kN. Force P is applied to push the blocks forward. The coefficient of friction μ = 0.20 for both A and B. The blocks are connected by a solid strut attached to each block with frictionless pins. (a) what is the force on the strut, in KN? (b) what is the reaction at B, in kN? (c) what is the value of P, in kN, to prevent forward motion? 30° 60° B

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter2: Axially Loaded Members

Section: Chapter Questions

Problem 2.8.12P: A bungee jumper having a mass of 55 kg leaps from a bridge, braking her fall with a long elastic...

See similar textbooks

Similar questions

The cord shown in the figure is wrapped around a frictionless pulley and supports a block with a mass of 100 kg. Calculation for the determination of the vertical reaction of the pin support at A, using the free body diagram of member ABC. Calculation for the determination horizontal and vertical reactions of the pin support at B, using the free body diagram of member ABC.
A uniform rod of weight mg and length L is in equilibrium on a frictionless support as shownin the above figure. Find θ.
In the figure, the radius of cylinder A is 4m, cylinder B is 6m and cylinder C is 5m. Neglecting friction, a) solve For the reaction between A and B, b) reaction between the wall and B c) reaction between the Floor and A. Given: Distance between 15 KN and 40 KN load is 8m.
The cord shown in the figure is wrapped around a frictionless pulley and supports a block with a mass of 100 kg. (A) Clearly show the needed free-body diagram. (B) Calculation for determining of the horizontal support reaction at the pin support at A, using the FBD of entire frame. (C) Calculation for the determination of the pin reaction at C, using the free-body diagram of pulley at C. (D) Calculation for the determination of the vertical reaction of the pin support at A, using the free body diagram of member ABC. (E) Calculation for the determination horizontal and vertical reactions of the pin support at B, using the free body diagram of member ABC.
Find the support reactions at A, B and C from the rigid link DEF supported bycylinder at D and F. The link is loaded by force of 20kN as shown in figure. Neglect friction and self weight of link and cylinders. Take diameters of cylinders as 200 mm and DE=EF=300mm.
PROBLEM 7: In the figure, μ = 0.30 for the contact of the 80-kg crate and the ground. Pulleys are frictionless. (a) determine the value of θ to move the crate (b) Determine the tensile force (in N) in the rope attached to the crate to move the crate. (c) Determine the smallest force (in N) the man must exert on the rope to move the crate
As shown in the below figure, two blocks each weighing 1.5 kN are connected by a uniform horizontal bar which weighs 1.0 kN. If the angle of friction is 15° under each block, find P directed parallel to the 45° incline that will cause impending motion to the left.
Include the FBD of the problem Can the system in given figure be in static equilibrium in the position shown? The uniform bar AB weighs 500 lb, and the weight of block C is 300 lb. Friction at A is negligible, and the coefficient of static friction is 0.4 at the other two contact surfaces.
draw free body diagrams for the arrangement of two 50kg cylindrical rollers shown in the figure and determine the magnitudes of all the contact forces. assume all surfaces are frictionless
The bar AB in figure "a" has weight W, length L, and is articulated at point B. End A is supported by a light thread, which passes through a smooth pulley, from which a block hangs at its other end. . Required: (a) Determine how much the block must weigh so that bar AB is in equilibrium. (b) Assuming that the block actually has the value calculated before, but instead of the bar being hinged at B, it only rests on a rough plane with coefficient μ= 0.7, as shown in figure "b". Is the bar balanced?
A 110-kg uniform ladder is tied at its bottom on the wall using a wire shown in the figure. The floor is frictionless, while the wall is rough. The maximum tension on the wire is 180 N. (a) What is the normal force exerted by the wall on the ladder? (b) What is the frictional force exerted by the wall to the ladder?
The wheel of radius 300mm is being stopped by a block brake shown in the figure. A triangular distributed load is being applied to the handle. With a coefficient of friction of 0.9, determine the smallest distributed load P necessary to resist an 85 N-m moment M.