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A steel wire of length 4.7 m and cross-sectional area 3 × 10^−6 m^2 stretches by the same amount as a copper wire of length 3.5 m and cross-sectional area of 4 × 10^−6 m^2 under a given load. The ratio of Young’s modulus of steel to that of copper is
10
Oct
A steel wire of length 4.7 m and cross-sectional area 3 × 10^−6 m^2 stretches by the same amount as a copper wire of length 3.5 m and cross-sectional area of 4 × 10^−6 m^2 under a given load. The ratio of Young’s modulus of steel to that of copper is A thick rope of [...]
The elastic limit of an elevator cable is 2 × 10^9 N/m^2. The maximum upward acceleration that an elevator of amss 2×103kg can have been supported by a cable would not exceed half of the elastic limit would be
10
Oct
The elastic limit of an elevator cable is 2 × 10^9 N/m^2. The maximum upward acceleration that an elevator of amss 2×103kg can have been supported by a cable would not exceed half of the elastic limit would be A thick rope of density ρ and length L is hung from a rigid support. The [...]
A 5 kg rod of square cross section 5 cm on a side and 1 m long is pulled along a smooth horizontal surface by a force applied at one end. The rod has a constant acceleration of 2 m/s^2. Determine the elongation in the rod. (Young’s modulus of the material of the rod is 5 × 10^3 N/m^9).
10
Oct
A 5 kg rod of square cross section 5 cm on a side and 1 m long is pulled along a smooth horizontal surface by a force applied at one end. The rod has a constant acceleration of 2 m/s^2. Determine the elongation in the rod. (Young’s modulus of the material of the rod is [...]
The length of a steel cylinder is kept constant by applying pressure at its two ends. When the temperature of rod is increased by 100 ∘ C from its initial temperature, the increase in pressure to be applied at its ends is (Y sted = 2 ×10^ 11 N/m ^ 2 , α steel 11 × 10 ^ −6 % C ,1 atm = 10 ^5 N/m ^2 )
10
Oct
The length of a steel cylinder is kept constant by applying pressure at its two ends. When the temperature of rod is increased by 100 ∘ C from its initial temperature, the increase in pressure to be applied at its ends is (Y sted = 2 ×10^ 11 N/m ^ 2 , α steel 11 [...]
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1 atm = 10 ^5 N/m ^2 ) ,
the increase in pressure to be applied at its ends is (Y sted = 2 ×10^ 11 N/m ^ 2 ,
The length of a steel cylinder is kept constant by applying pressure at its two ends. When the temperature of rod is increased by 100 ∘ C from its initial temperature ,
α steel 11 × 10 ^ −6 % C ,
In the figure shown, forces of equal magnitude are applied to the two ends of a uniform rod . consider A as the cross sectional area of the rod. For this situation , mark out the incorrect statements.
10
Oct
In the figure shown, forces of equal magnitude are applied to the two ends of a uniform rod . consider A as the cross sectional area of the rod. For this situation , mark out the incorrect statements. forces of equal magnitude are applied to the two ends of a uniform rod . consider A [...]
A thick rope of density ρ and length L is hung from a rigid support. The increase in length of the rope due to its own weight is (Y is the Young’s modulus)
10
Oct
A thick rope of density ρ and length L is hung from a rigid support. The increase in length of the rope due to its own weight is (Y is the Young’s modulus) A thick rope of density ρ and length L is hung from a rigid support. The increase in length of the rope [...]
A rubber rope of length 8 m is hung from the ceiling of a room. What is the increase in length of rope due to its own weight? (Given: Young’s modulus of elasticity of rubber = 5 × 10^6 N/m and density of rubber = 1.5 × 10^3 kg/m^3. Take g=10 m/s^2 )
10
Oct
A rubber rope of length 8 m is hung from the ceiling of a room. What is the increase in length of rope due to its own weight? (Given: Young’s modulus of elasticity of rubber = 5 × 10^6 N/m and density of rubber = 1.5 × 10^3 kg/m^3. Take g=10 m/s^2 ) A steel [...]
A material has normal density rho and bulk modulus k. the increase in the density of the material when it is subjected to an external pressure P from all sides is
10
Oct
A material has normal density rho and bulk modulus k. the increase in the density of the material when it is subjected to an external pressure P from all sides is A material has normal density rho and bulk modulus k. the increase in the density of the material when it is subjected to an [...]
A uniform cylindrical wire is subjected to a longitudinal tensile stress of 5 × 10 ^ 7 N/m 2 . Young’s modulus of the material of the wire is 2 × 10 ^ 11 N/m 2 . The volume change in the wire is 0.02 %. The fractional change in the radius is
10
Oct
A uniform cylindrical wire is subjected to a longitudinal tensile stress of 5 × 10 ^ 7 N/m 2 . Young’s modulus of the material of the wire is 2 × 10 ^ 11 N/m 2 . The volume change in the wire is 0.02 %. The fractional change in the radius is A steel [...]
A steel wire is suspended vertically from a rigid support. When loaded with a weight in air, it expands by and when the weight is immersed completely in water, the extension is reduced to 14 cm . Then relative done of the material of weight is
10
Oct
A steel wire is suspended vertically from a rigid support. When loaded with a weight in air, it expands by and when the weight is immersed completely in water, the extension is reduced to 14 cm . Then relative done of the material of weight is A steel wire is suspended vertically from a rigid [...]