Gamma Question Bank for Medical Physics>Chapter 9 - Mechanical Properties of Solids>Assignment>Q 6

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A steel wire of diameter $2 mm$ has a breaking strength of $4 \times 10^{5} N$ . What is the breaking force of similar steel wire of diameter $1.5 mm$ ?

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Important Questions on Mechanical Properties of Solids

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Gamma Question Bank for Medical Physics>Chapter 9 - Mechanical Properties of Solids>Assignment>Q 7

A steel wire is

1 m

long and

1 {mm}^{2}

in area of crosssection. If it takes

200 N

to stretch this wire by

1 mm

, how much force will be required to stretch a wire of the same material as well as diameter from its normal length of

10 m

to a length of

1002 cm

?

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Gamma Question Bank for Medical Physics>Chapter 9 - Mechanical Properties of Solids>Assignment>Q 8

What is the percentage increase in length of a wire of diameter $2.5 mm$ , stretched by a force of $100 kg - wt$ ?

Young's modulus of elasticity of wire $= 12.5 \times 10^{11} dyne / {cm}^{2}$

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Gamma Question Bank for Medical Physics>Chapter 9 - Mechanical Properties of Solids>Assignment>Q 9

The Poisson ratio of the material is

0.5

. If a force is applied be a wire of this material, there is a decrease in cross-sectional area by

4 %

. The percentage increase in length is

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Gamma Question Bank for Medical Physics>Chapter 9 - Mechanical Properties of Solids>Assignment>Q 10

A uniform cubical block is subjected to volumetric compression, which decreases its each side by

2 %

. The Bulk strain produced in it is

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Gamma Question Bank for Medical Physics>Chapter 9 - Mechanical Properties of Solids>Assignment>Q 11

The Poisson's ratio cannot have the value,

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Gamma Question Bank for Medical Physics>Chapter 9 - Mechanical Properties of Solids>Assignment>Q 12

A material has Poisson's ratio

0.5 .

If a uniform rod of it suffers a longitudinal strain of

2 \times 10^{- 3}

, the percentage increase in its volume is :

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Gamma Question Bank for Medical Physics>Chapter 9 - Mechanical Properties of Solids>Assignment>Q 13

Hooke's law is applicable for

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Gamma Question Bank for Medical Physics>Chapter 9 - Mechanical Properties of Solids>Assignment>Q 14

When a load of

10 kg

is suspended on a metallic wire, its length increase by

2 mm

. The force constant of the wire is