A metal cube of side length `8.0cm` has its upper surface displacement with respect to the bottom by `0.10mm` when a tangential force of `4xx10^(9)N` is applied at the top with bottom surface fixed. The rigidity modulus of the material of the cube isA. `4xx10^(14) N//m^(2)`B. `5xx10^(14) N//m^(2)`C. `8xx10^(14) N//m^(2)`D. `1xx10^(14) N//m^(2)`

A metal cube of side length `8.0cm` has its upper surface displacement

1.	A metal cube of side length `8.0cm` has its upper surface displacement with respect to the bottom by `0.10mm` when a tangential force of `4xx10^(9)N` is applied at the top with bottom surface fixed. The rigidity modulus of the material of the cube isA. `4xx10^(14) N//m^(2)`B. `5xx10^(14) N//m^(2)`C. `8xx10^(14) N//m^(2)`D. `1xx10^(14) N//m^(2)`
Answer» Correct Answer - B `eta = (FL)/(Al), A = L^(2), eta = (FL)/(L^(2) l) = (F)/(Ll)`

Discussion

No Comment Found

Related InterviewSolutions

Modulus of rigidity of a liquidA. infinityB. zeroC. unityD. some finite small non-zero constant value
What is value of modulus of rigidity for a liquid?A. InfinityB. zeroC. unityD. some finite small non-zero constant value
An iron rod B of length 1 m and mass 1 kg is suspended with help of two wires as shwon in figure. The area of cross-section of iron wire is 0.3 `cm^(2)` and of copper wire is `0.6cm^(2)`. In the above question, if `Y_("iron"):Y_(Cu)=2:1`, then the ratio of extension produced in copper wire to iron wire isA. `1:1`B. `2:1`C. `1:2`D. `1:4`
An iron rod B of length 1 m and mass 1 kg is suspended with help of two wires as shwon in figure. The area of cross-section of iron wire is 0.3 `cm^(2)` and of copper wire is `0.6cm^(2)`. At what distance from iron wire a weight can be hung to produce equal stress in wires?A. 0.82 mB. 0.38 mC. 0.67 mD. 0.47 m
A rod of length `l`, mass `M`, cross section area `A` is placed on a rough horizonatal surface. A horizonatal force `F` is applied to rod as shwon in figure. The coefficient of fricition between rod and surface is `mu`, the Young, modulus of material of rod is `Y`. [Assume that fricition force is distributed uniformly on rod] The elongation in the rod if `F lt mu Mg` isA. ZeroB. `[(F- (mu Mg)/(2))/(2AY)]l`C. `(Fl)/(2AY)`D. None
The length of a wire under stress changes by `0.01%`.The strain produced isA. `1xx10^(-4)`B. `0.01`C. `1`D. `10^(4)`
Two parallel and opposite forces each 5000 N are applied tangentially to the upper and lower faces of a cubical metal block of side 25 cm. the angle of shear is (The shear modulus of the metal is 80 Gpa)A. `10^(-4) rad`B. `10^(-5) rad`C. `10^(-6) rad`D. `10^(-7) rad`
A wire gets elongated by 4 mm when a block of mass 2 kg is suspended from it. Now, the block is immersed in water, the wire contracts by 1 mm. Find the density of block when the density of water is `1000kg//m^(3)`.
A metallic rod undergoes a strain of `0.5%`. The energy stroed per unit volume isA. `0.5xx10^(4) Jm^(-3)`B. `0.5xx10^(5) Jm^(-3)`C. `2.5xx10^(5) J m^(-3)`D. `2.5xx10^(4) J m^(-3)`
Which of the following is the graph showing stress-strain variation for elastomers ?A. B. C. D.

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment