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engineering
civil engineering
Questions and Answers of
Civil Engineering
Determine the normal force, shear force, and moment at a section passing through point D. take w = 150N/m
Determine the normal force, shear force, and moment acting at a section passing through point C. take P = 8kN
Determine the internal normal force, shear force, and bending moment at pointC.
Solve Prob. 7-24 assuming that each beam has a uniform weight of 150lb/ft.
Determine the internal normal force, shear force, and moment acting at sections passing through points B and C on the curvedrod.
The cantileverd rack is used to support each end of a smooth pipe that has a total weight of 300 lb. determine the normal force, shear force, and moment that acting in the arm at its fixed support A
Determine the internal normal force, shear force, and bending moment in the beam at pints D and E. Point E is just to the right of the 4-kip load. Assume A is a roller support, the splice at B is a
Determine the internal normal force, shear force, and bending moment at points E and F of theframe
Solve prob. 7.36 for ? = 120o
Draw the shear and moment diagram for thebeam
Draw the shear and bending ? moment diagrams for the beam.
Draw the shear and moment diagram for thebeam.
Draw the shear and moment diagrams for thebeam.
Draw the shear and moment diagram for thebeam
Draw the shear and moment diagrams for thebeam.
Draw the shear and moment diagram for thebeam
Draw the shear and moment diagram for thebeam
Draw the shear and moment diagrams for thebeam
Draw the shear and moment diagram for thebeam.
Draw the shear and moment diagram for thebeam
Draw the shear and moment diagrams for thebeam.
Draw the shear and moment diagrams for thebeam
Draw the shear and moment diagrams for thebeam.
Draw the shear and moment diagrams for thebeam
Draw shear and moment diagrams for thebeam.
Draw the shear and moment diagram for thebeam
Draw the shear and moment diagram for thebeam.
Draw the shear and moment diagrams for thebeam.
Draw the shear and moment diagrams for thebeam.
Draw the shear and moment diagram for thebeam.
Draw the shear and moment diagrams for thebeam.
Determine the tension in each segment of the cable and the cable?s total length.
Determine the maximum tension developed in the cable if it is subjected to a uniform load of 600N/m.
A cable has a weight of 5 lb/ft. If it can span 300 ft and has a sag of 15 ft, determine the length of the cable. The ends of the cable are supported at the same elevation
A Cable has a weight of 2 lb/ft. if it can span 100 ft and has a sag of 12 ft, determine the length of the cable. The ends of the cable are supported from the same elevation.
The cable weighs 6 lb/ft and is 150 ft in length. Determine the sag h so that the cable spans 100 ft. find the minimum tension in thecable.
A telephone line (cable) stretches between two points which are 150 ft apart and at the same elevation. The line sags 5 ft and the cable has a weight of 0.3 lb/ft. determine the length of the cable
A 50-ft cable us suspended between two points a distance of 15 ft apart and at the same elevation. If the minimum tension in the cable is 200 lb, determine the total weight of the cable and the
The man picks up the 52-ft chain and holds it just high enough so it is completely off the ground. The chain has points of the attachment A and B that are 50 ft apart. If the chain has a weight of 3
Draw the shear and moment diagram for thebeans
Draw the shear and moment diagram for the beansABC
Draw the shear and moment diagrams for thebeam
Determine the minimum horizontal force?P?required to hold the crate from sliding down the plane. The crate has a mass of 50 kg and the coefficient of static friction between the crate and the plane
Determine the minimum force P required to push the crate up the plane. The crate has a mass of 50 kg and the coefficient of static friction between the crate and the plane is ?s = 0.25.
A horizontal force of P = 100 N is just sufficient to hold the crate from sliding down the plane, and a horizontal force of P = 350 N is required to just push the crate up the plane. Determine the
If the coefficient of static friction at A is ?s = 0.4 and the collar at B is smooth so it only exerts a horizontal force on the pipe, determine the minimum distance x so that the bracket can support
The 180-lb man climbs up the ladder and stops at the position shown after he senses that the ladder is on the verge of slipping. Determine the inclination ? of the ladder if the coefficient of static
The 180-lb man climbs up the ladder and stops at the position shown after he senses that the ladder is on the verge of slipping. Determine the coefficient of static friction between the friction pad
The uniform thin pole has a weight of 30 lb and a length of 26 ft. If it is placed against the smooth wall and on the rough floor in the position d = 10 ft, will it remain in this position when it is
If the coefficient of static friction at all contacting surfaces is ?s, determine the inclination ? at which the identical blocks, each of weight W, begin to slide.
The uniform 20-lb ladder rests on the rough floor for which the coefficient of static friction is ?s = 0.8 and against the smooth wall at B. Determine the horizontal force P?the man must exert on the
The coefficients of static and kinetic friction between the drum and brake bar are ?s?= 0.4 and ?k?= 0.3, respectively. If M = 50N ? m and P = 85 N determine the horizontal and vertical components of
The coefficient of static friction between the drum and brake bar is ?s = 0.4. If the moment M = 35 N ? m, determine the smallest force P that needs to be applied to the brake bar in order to prevent
Determine the minimum coefficient of static friction between the uniform 50-kg spool and the wall so that the spool does notslip.
The spool has a mass of 200 kg and rests against the wall and on the floor. If the coefficient of static friction at B is (?s)B = 0.3, the coefficient of kinetic friction is (?k)B = 0.2, and the wall
The 80-lb boy stands on the beam and pulls on the cord with a force large enough to just cause him to slip. If the coefficient of static friction between his shoes and the beam is (?s)p?= 0.4,
The 80-lb boy stands on the beam and pulls with a force of 40 lb. If (?s)D = 0.4, determine the frictional force between his shoes and the beam and the reactions at A and B. The beam is uniform and
The tongs are used to lift the 150-kg crate, whose center of mass is at G. Determine the least coefficient of static friction at the pivot blocks so that the crate can belifted.
Two blocks A and B have a weight of 10 lb and 6 lb, respectively. They are resting on the incline for which the coefficients of static friction are ?A = 0.15 and ?B = 0.25. Determine the incline
Two blocks A and B have a weight of 10 lb and 6 lb, respectively. They are resting on the incline for which the coefficients of static friction are ?A = 0.15 and ?B = 0.25. Determine the angle ?
Crates A and B weigh 200 lb and 150 lb, respectively. They are connected together with a cable and ?placed on the inclined plane. If the angle ? is gradually increased, determine ? when the crates
A man attempts to support a stack of books horizontally by applying a compressive force of F = 120N to the ends of the stack with his hands. If each book has a mass of 0.95 kg, determine the greatest
The paper towel dispenser carries two rolls of paper. The one in use is called the stub roll A and the other is the fresh roll B. They weigh 2 lb and 5 lb, respectively. If the coefficients of static
The drum has a weight of 100 lb and rests on the floor for which the coefficient of static friction is ?s = 0.6. If a = 2 ft and b = 3 ft, determine the smallest magnitude of the force P that will
The drum has a weight of 100 lb and rests on the floor for which the coefficient of static friction is ?s = 0.5. If a = 3 ft and b = 4 ft, determine the smallest magnitude of the force P that will
The refrigerator has a weight of 180 lb and rests on a tile floor for which ?s = 0.25. If the man pushes horizontally on the refrigerator in the direction shown, determine the smallest magnitude of
The refrigerator has a weight of 180 lb and rests on a tile floor for which ?s = 0.25.Also, the man has a weight of 150 lb and the coefficient of static friction between the floor and his shoes is ?s
Determine the minimum force P needed to push the two 75-kg cylinders up the incline. The force acts parallel to the plane and the coefficients of static friction of the contacting surfaces are ?A =
If the center of gravity of the stacked tables is at G, and the stack weighs 100 lb, determine the smallest force P the boy must push on the stack in order to cause movement. The coefficient of
The tractor has a weight of 8000 lb with center of gravity at G. Determine if it can push the 550-lb log up the incline. The coefficient of static friction between the log and the ground is ?s = 0.5,
The tractor has a weight of 8000 lb with center of gravity at G. Determine the greatest weight of the log that can be pushed up the incline. The coefficient of static friction between the log and the
The 50-kg uniform pole is on the verge of slipping at A when ? = 45o. Determine the coefficient of static friction at A.
A force of P = 20 lb is applied perpendicular to the handle of the gooseneck wrecking bar as shown. If the coefficient of static friction between the bar and the wood is ?s = 0.5, determine the
The thin rod has a weight W and rests against the floor and wall for which the coefficients of static friction are ?A and ?B, respectively. Determine the smallest value of ? for which the rod will
A roll of paper has a uniform weight of 0.75 lb and is suspended from the wire hanger so that it rests against the wall. If the hanger has a negligible weight and the bearing at O can be considered
A roll of paper has a uniform weight of 0.75 lb and is suspended from the wire hanger so that it rests against the wall. If the hanger has a negligible weight and the bearing at O can be considered
If the coefficient of static friction between the chain and the inclined plane is ?s = tan ?, determine the overhang length b so that the chain is on the verge of slipping up the plane. The chain
Determine the maximum height h in meters to which the girl can walk up the slide without supporting herself by the rails or by her left leg. The coefficient of static friction between the girl?s
If the coefficient of static friction at B is ?s = 0.3, determine the largest angle and the minimum coefficient of static friction at A so that the roller remains self-locking, regardless of the
If ? = 30o, determine the minimum coefficient of static friction at A and B so that the roller remains self-locking, regardless of the magnitude of force P applied to the belt. Neglect the weight of
The clamp is used to tighten the connection between two concrete drain pipes. Determine the least coefficient of static friction at A or B so that the clamp does not slip regardless of the force in
The coefficient of static friction between the 150-kg crate and the ground is ?s = 0.3, while the coefficient of static friction between the 80-kg man?s shoes and the ground is ??s = 0.4. Determine
If the coefficient of static friction between the crate and the ground is ?s = 0.3, determine the minimum coefficient of static friction between the man?s shoes and the ground so that the man can
The 3-Mg rear-wheel-drive skid loader has a center of mass at G. Determine the largest number of crates that can be pushed by the loader if each crate has a mass of 500 kg. The coefficient of static
Block C has a mass of 50 kg and is confined between two walls by smooth rollers. If the block rests on top of the 40-kg spool, determine the minimum cable force P needed to move the spool. The cable
Block C has a mass of 50 kg and is confined between two walls by smooth rollers. If the block rests on top of the 40-kg spool, determine the required coefficients of static friction at A and B so
The 3-Mg four-wheel-drive truck (SUV) has a center of mass at G. Determine the maximum mass of the log that can be towed by the truck. The coefficient of static friction between the log and the
A 3-Mg front-wheel-drive truck (SUV) has a center of mass at G. Determine the maximum mass of the log that can be towed by the truck. The coefficient of static friction between the log and the ground
If the coefficients of static friction at contact points A and B are ?s = 0.3 and ??s = 0.4 respectively, determine the smallest force P that will cause the 150-kg spool to have impending motion.
If the coefficients of static friction at contact points A and B are ?s = 0.4 and ??s = 0.2 respectively, determine the smallest force P that will cause the 150-kg spool to have impending motion.
The carpenter slowly pushes the uniform board horizontally over the top of the saw horse. The board has a uniform weight of 3lb/ft, and the saw horse has a weight of 15 lb and a center of gravity at
The carpenter slowly pushes the uniform board horizontally over the top of the saw horse. The board has a uniform weight of 3 lb/ft, and the saw horse has a weight of 15 lb and a center of gravity at
If the 75-lb girl is at position d = 4 ft, determine the minimum coefficient of static friction ?s at contact points A and B so that the plank does not slip. Neglect the weight of the plank
If the coefficient of static friction at the contact points A and B is ?s = 0.4, determine the minimum distance d where a 75-lb girl can stand on the plank without causing it to slip. Neglect the
If each box weighs 150 lb, determine the least horizontal force P that the man must exert on the top box in order to cause motion. The coefficient of static friction between the boxes is ?s = 0.5,
If each box weighs 150 lb, determine the least horizontal force P that the man must exert on the top box in order to cause motion. The coefficient of static friction between the boxes is ?s = 0.65,
If the coefficient of static friction between the collars A and B and the rod is ?s = 0.6, determine the maximum angle for the system to remain in equilibrium, regardless of the weight of cylinder D.
If ? = 15o, determine the minimum coefficient of static friction between the collars A and B and the rod required for the system to remain in equilibrium, regardless of the weight of cylinder D.
Each of the cylinders has a mass of 50 kg. If the coefficients of static friction at the points of contact are ?A = 0.5, ?B = 0.5, ?C = 0.5,and ?D = 0.6, determine the smallest couple moment M needed
Blocks A, B, and C have weights of 50 lb, 25 lb, and 15 lb, respectively. Determine the smallest horizontal force P that will cause impending motion. The coefficient of static friction between A and
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