Attach your free body diagram for the problem. The beam supports the distributed load shown. Determine the resultant internal loadings on the cross sections at points D and E. Assume the reactions at the supports A and B are vertical. AI 800 lb/ft IB D C E 6 ft 6 ft 6 ft- 4.5 ft 4.5 ft

Attach your free body diagram for the problem. The beam supports the distributed load shown. Determine the resultant internal loadings on the cross sections at points D and E. Assume the reactions at the supports A and B are vertical. AI 800 lb/ft IB D C E 6 ft 6 ft 6 ft- 4.5 ft 4.5 ft

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter12: Static Equilibrium And Elasticity

Section: Chapter Questions

Problem 79CP: In order to lift a shovelful of dirt, a gardener pushes downward on the end of the shovel and pulls...

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In order to lift a shovelful of dirt, a gardener pushes downward on the end of the shovel and pulls upward at distance l2 from the end, as shown below. The weight of the shovel is mg and acts at the point os application of F2 . Calculate the magnitudes of the forces F1 and F2 as functions of l1 , l2 , mg, and the weight W of the load. Why do your answers not depend on the angle that shovel makes with the horizontal?
When using a pencil eraser, you exert a vertical force of 6.00N at a distance of 2.00cm from the hardwood-eraser joint. The pencil is 6.00mm in diameter and is held at an angle of 20.0 to the horizontal. (a) By how much does the wood flex perpendicular to its length? (b) How much is it compressed lengthwise?
A vertebrae is subjected to a shearing force of 500.0N . Find the shear deformation, taking the vertebrae to be a cylinder 3.00cm high and 4.00cm in diameter. How does your result compare with the result obtained in the preceding problem? Are spinal problems more comman in disks than in vertebrae?
The uniform boom shown below weighs 3000N . It is supported by the horizontal guy wire and by the hinged support at point A. What are the forces on the boom due to the wire and due to the support at A? Does the force at A act along the boom?
In order to get his car out of the mud, a man ties one end of a rope to the front bumper and the other end to a tee 15 m away as shown below. He then pulls on the center of the rope with a force of 400 N, which causes its center to be displaced 0.30 m, as shown. What is the force of the rope on the car?
What force must be applied at point P to keep the structure shown in equilibrium? The weight of the structure is negligible.
A 12.0m boom, of a crane lifting a 3000kg load is shown below. The center of mass of the boom is at its geometric center, and the mass of the boom is 1000kg . For the position shown, calculate tension T in the cable and the force at the axle A.
The forearm shown below is positioned at an angle with respect to the upper arm , and a 5.0- kg mass is held in the hand. The total mass of the forearm and hand is 3.0 kg, and their center of mass is 15.0 cm from the elbow. (a) What is the magnitude of the force that the biceps muscle exerts on the forearm for =60 ? (b) What is the magnitude of the force on the elbow joint for the same angle? (c) How do these forces depend on the angle ?
The pole shown below is at a 90.0 bend in a power line and is therefore subjected to more shear force than poles in strsight part of the line. The tension in each line is 4.00104N , at the angles shown. The pole is 15.0 m tall, has an 18.0 cm diameter, and can be considered to have half the strength of hardwood. (a) Calculate the compression of the pole. (b) Find how much it bends and in what direction. (c) Find the tension in a guy wire used to keep the pole straight if it attached to the top of the pole at an angle of 30.0 with the vertical. The guy wire is in the opposite direction of the bend.
One end of a vertical metallic wire of length 2.0m and diameter 1.0mm is attached to a ceiling, and the other end is attached to a 5.0N weight pan, as shown below. The position of the pointer before the pan is 4.000cm . Different weights are then added to the pan area, and the position of the pointer is recorded in the table shown. Plot stess versus strain for this wire, then the use the resulting curve to determine Young’s modulus and the proportionality limit of the metal. What metal is this most likely to be?
A horizontal force F is applied to a uniform sphere in direction exact toward the center of the sphere, as shown below. Find the magnitude of this forcee so that the sphere remains in static equilibrium. What is the frictional force of the incline on the sphere?