In some recent studies it has been shown that women are more susceptible to torn anterior cruciate ligaments, or ACLs, than men when competing in similar sports (most notably in soccer and basketball).   Select the statement that explains why this disparity might exist.   The ACL of women is more elastic than the ACL of men.   The Young's modulus of women's ACLs is typically smaller than that of men's, resulting in more stress for the same amount of strain.   The cross-sectional area of the ACL is typically larger in men, and therefore experiences less strain for the same tensile force and Young's modulus.   The cross-sectional area of the ACL is typically smaller in women, and therefore experiences less stress for the same tensile force.

Q: our biceps muscle is attached to your elbow by the distal biceps tendon. An average adults tendon…

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Q: A 5.0 × 102 N object is hung from the end of a wire of cross-sectional area 1x10-6 cm2. The wire…

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Q: Human bones have a Young's modulus of 1.5 x 1010 Pa. The bone breaks if stress exceeds 1.5 x 10° Pa.…

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Q: As part of an exercise program, a 75-kg person does toe raises in which he raises his entire body…

A: Given that: M=75 kg l=25 cm=0.25 m A=78 mm2=78x10-6 m2 Y=1470 MPa=1470x106 Pa r1=4.6 cm=0.046 m…

Q: There is a small but appreciable amount of elastic hysteresis in the large tendon at the back of a…

A: The elastic hysteresis is behavior of an elastic material while regaining its shape when the…

Q: Humans can bite with a force of approximately 793 N. If a human tooth has the Young's modulus of…

A:

Q: Steel beams are used for load bearing supports in a building. Each beam is 4.0 m long with a…

A: Length , L = 4 m Cross sectional area , A = 9.3 x 10-3 m2  Load , F = 7.5 x 104 N Young's modulus ,…

Q: Humans can bite with a force of approximately 810 N. If a human tooth has the Young's modulus of…

A: SOlution: as given F = 810 N E = youngs modulus of bone= A = 1.5 cm2 = 1.5x10-4 m2 L = 1.5 cm =…

Q: The leg bone (femur) breaks under a compressive force of about 9.00 × 104 N for a human and…

A: Given: Force to break a human leg FH = 9 x 104N            Compressive Strength (Pressure) of human…

Q: A student performed an experiment to examine the stress-strain properties for two elastic objects…

A: Here given two elastic object. One of young modulus is 600Mpa and another 2300 MPa. We have to…

Q: The anterior cruciate ligament in a woman's knee is 2.5 cm long and has a cross-sectional area of…

A: Given that the length of the ligament is 2.5cm, its cross-sectional area is 0.50cm2, its Young’s…

Q: Two steel plates are fastened together using four bolts. The bolts each have a shear modulus of 80.0…

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Q: A 0.50 m long guitar string, of cross- sectional area 1.0 x10-6 m2, has a Young’s modulus of 2.0x…

A: Given : L = 0.50 m A = 1 × 10-6 m2 Y = 2 × 109 Pa F = 20.0 N

Q: The leg bone (femur) breaks under a compressive force of about 7.90 × 104 N for a human and 11.3 ×…

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Q: The nuchal ligament in a horse supports the weight of the horse’s head. This ligament is much more…

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Q: A cable is 100 m long and has a cross sectional area of 1 mm^2. A 1000 N force is applied to stretch…

A: The expression for find stretched length of the cable is Y=FA∆LL0∆L=FL0YA

Q: A particular human hair has a Young's modulus of 3.63×109 N/m2 and a diameter of 145 μm. If a 228 g…

A: Write the expression for Young’s modulus, and solve for the change in length of the hair.

Q: The three plates are connected by three pins with circular cross-sections. Assume each of the pins…

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Q: What hanging mass will stretch a 2.2-m-long, 0.34 mm - diameter steel wire by 1.2 mm? The Young's…

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Q: A 5.73 kg pipe is hung from a steel wire that is 2.96 long and has a diameter of 0.839 mm. Young's…

A: Write the expression for the stress and substitute the corresponding values. σ=PAσ=mgπ4d2σ=(5.73…

Mechanical Properties of Solids

There are three types of matter- solid, liquid and gas. Out of them, solids have a rigid shaped and size. The intermolecular forces of attractions in solids are greatest. Mechanical properties are the physical properties of a material which it shows, when it is provided with certain amount of force or load. These properties are to be kept in mind for various purposes. When a force is applied to an object, the object may or may not get deformed depending upon its elastic property. But every time the object develops a restoring force against the force applied. This is commonly known as stress. If the object changes its dimensions due to the force applied it develops strain ( which is the ratio of change in dimension to the original dimension).