NEET UG PHYSICS MCQ: MECHANICAL PROPERTIES OF SOLIDS

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Application +4 | -1

A metal cube of side 8 cm. If the top of the cube is displaced by 0.04 cm with respect to its bottom. What is the shearing stress if the rigidity modulus is

4 \times {10^6}\,N/{m^2}\,\,\left[ {\mathrm{in}\,\,N/{m^2}} \right]

View answer and explanation

Correct option: B

2 \times {10^4}

Option B (

2 \times {10^4}

) is correct because shearing stress is the product of the rigidity modulus and the shearing strain.

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A 20 kg load is suspended by a wire of area of cross section is

1\,m{m^2}

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\left[ {g = 10\,m{s^{ - 2}}\,} \right]\,

In magnitude hydraulic stress is equal to: A wire extends by

\mathrm{1 mm}

when a force is applied. Double the force is applied to another wire of same material and length but half the radius of cross-section. The elongation of the wire in mm will be Stress to strain ratio is equivalent to A

2\,\,m

long rod of radius

1\,\,cm

which is fixed from one end is given a twist of

0.8

radians. The shear strain developed will be The relationship between Young’s modulus

Y

, Bulk modulus

\mathrm{K}

and modulus of rigidity

\eta