**Physics Problem on Material Properties****Problem:**A large 75-kg lighting fixture can be hung from wires of identical size and shape made of aluminum, brass, or copper. The values of Young's modulus for these metals are 0.70 × 10¹¹ Pa (aluminum), 0.91 × 10¹¹ Pa (brass), and 1.1 × 10¹¹ Pa (copper). Which wire would stretch the least distance?**Options:**A. Copper B. Aluminum C. Brass D. They will all stretch the same distance.*Explanation:*Young's modulus (E) measures the stiffness of a material. The higher the Young's modulus, the less it will stretch under a given load. Therefore, to determine which wire will stretch the least, we should compare their Young's modulus values:- Aluminum: 0.70 × 10¹¹ Pa- Brass: 0.91 × 10¹¹ Pa- Copper: 1.1 × 10¹¹ PaCopper has the highest Young's modulus among the given materials, indicating that it will stretch the least.**Correct Answer:**A. Copper

The mass is 75 kg.The Young's modulus of aluminum is 0.70x1011 Pa.The Young's modulus of brass is…

A large 75-kg lighting fixture can be hung from wires of identical size and shape made of aluminum, brass, or copper. The values of Young's modulus for these metals are 0.70 10¹1 Pa (aluminum), 0.91 x 10" (brass), and 1.1 10" (copper). Which wire would stretch the least distance? OA.copper OB. aluminum OC. brass Op. They will all stretch the same distance

A large 75-kg lighting fixture can be hung from wires of identical size and shape made of aluminum, brass, or copper. The values of Young's modulus for these metals are 0.70 10¹1 Pa (aluminum), 0.91 x 10" (brass), and 1.1 10" (copper). Which wire would stretch the least distance? OA.copper OB. aluminum OC. brass Op. They will all stretch the same distance

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter14: Static Equilibrium, Elasticity, And Fracture

Section: Chapter Questions

Problem 67PQ

See similar textbooks

Similar questions

Use the graph in Figure P14.46 to list the three materials from greatest Youngs modulus to smallest. Explain your reasoning. FIGURE P14.46
A 50.0-kg woman wearing high-heeled shoes is invited into a home in which the kitchen has vinyl floor covering. The heel on each shoe is circular and has a radius of 0.500 cm. (a) If the woman balances on one heel, what pressure does she exert on the floor? (b) Should the homeowner be concerned? Explain your answer.
Assume Youngs modulus for bone is 1.50 1010 N/m2. The bone breaks if stress greater than 1.50 108 N/m2 is imposed on it. (a) What is the maximum force that can be exerted on the femur bone in the leg if it has a minimum effective diameter of 2.50 cm? (b) If this much force is applied compressively, by how much does the 25.0-cm-long bone shorten?
An aluminium (=2.7g/cm3) wire is suspended from the ceiling and hangs vertically. How long must the wire be before the stress at its upper end reaches the proportionality limit, which is 8.0107N/m2 ?
The lintel of prestressed reinforced concrete in Figure P12.27 is 1.50 m long. The concrete encloses one steel reinforcing rod with cross-sectional area 1.50 cm2. The rod joins two strong end plates. The cross-sectional area of the concrete perpendicular to the rod is 50.0 cm2. Youngs modulus for the concrete is 30.0 109 N/m2. After the concrete cures and the original tension T1 in the rod is released, the concrete is to be under compressive stress 8.00 106 N/m2. (a) By what distance will the rod compress the concrete when the original tension in the rod is released? (b) What is the new tension T2 in the rod? (c) The rod will then be how much longer than its unstressed length? (d) When the concrete was poured, the rod should have been stretched by what extension distance from its unstressed length? (e) Find the required original tension T1 in the rod. Figure P12.27
A rod of length 4.00 m with negligible mass is hinged to a wall. A rope attached to the end of the rod runs up to the wall at an angle of exactly 45, helping support the rod, while a sign of weight 10.0 N is hanging by two ropes attached to the bottom of the rod. The ropes make an angle of exactly 30 with the rod as shown in Figure P14.79. Another sign with a weight of 10.0 N is attached to the top of the rod with its center of mass at the midpoint of the rod. The entire system is in equilibrium. Find the magnitude of the tension in the rope above the rod that is also attached to the wall. FIGURE P14.79 Problems 79 and 80.
The “lead” in pencils is a graphite composition with a Young’s modulus of approximately 1.0109N/m2 . Calculate the change in length of the lead in an automatic pencil if you tap it straight into the pencil with a force of 4.0N . The lead is 0.50mm in diameter and 60mm long.
68. **Two rods have the same diameter and are welded together as shown in Figure 9-21. The shorter rod has a Young's modulus of Y,, the longer one has a Young's modulus of Y2. Calculate the combined Young's modulus for the system. L2 Figure 9-21 Problem 68
Accepted file types PDF document pdf A 1200-kg car is being raised with a constant acceleration of 253 m/s by a crane, using a 20-m long steel cable that is 1.5 cm in diameter. Young's modulus for steel is 200 GPa. What is the change in length of the cable caused by lifting the car?
An 1800-kg elephant is placed on top of an aluminum cylinder, 4.3 meters high. The area of the top of the cylinder is 0.080 m². By how much does the weight of the elephant compress the cylinder? Young's modulus for aluminum is Y = 7.0 X 1010 N/m?. Me= 1800 kg A = 0.080 m2 4.3 m