firefighter weighs 730 N. She wears shoes that each cover an area of 309 cm2. (a) What is the average stress she applies to the ground on which she is standing? (b) How does the stress change if she stands on only one foot? Show working equations for both (a) and (b). Answer must be in kPa.

Q: 3.00m long steel wire is fixed in a ceiling and a mass of 12.3kg is hanging from the wire. The wire…

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Q: The figure shows the stress-strain curve for a material. The scale of the stress axis is set by s=…

A: Stress scale, s = 350 Strain scale, ε = 0.010

Q: The following observation were made during a tensile test on a mild steel specimen of 40 mm diameter…

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A: Given : The maximum stress the structure can handle, P = 109 PaDepth of the sea, d = 3 km = 3 × 103…

Q: The figure shows the stress-strain curve for a material. The scale of the stress axis is set by s =…

A:

Q: The following figures show a steel bars of thickness h = 5 mm. the bars are subjected to a force P.…

A: Given: Figures with thickness, h = 5 mm Shear stress, t = 140MPa

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A: Stress for material is given as = 260* 10 6 N/M2 Here ∈ = 0.0070 So strain = 2∈ = 2…

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A: Given data *The frictional force acting on each foot is F = 20.0 N *The area of each shoe's sole is…

Q: The figure shows the stress-strain curve for a material. The scale of the stress axis is set by s =…

A:

Q: The figure shows the stress-strain curve for a material. The scale of the stress axis is set by s =…

A:

Q: The figure shows the stress-strain curve for a material. The scale of the stress axis is set by…

A: Given :  scale of the stress axis is set  as s=320 in a unit of 106N/m2 ε=0.0090

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A: The stress experienced when force is applied perpendicular to surface is called compressive stress .

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Q: 2. A 4.0 m long copper wire of cross-sectional area 2 2 cm is stretched by a force of 4.8 x 10° N.…

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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).