A solid uniform metal bar is hanging vertically from its upper end. Its elongation will be _________ Options: A . &nbspProportional to L and inversely proportional to D² B . &nbspProportional to L² and inversely proportional to D C . &nbspProportional of U but independent of D D . &nbspProportional of L but independent of D

A solid uniform metal bar is hanging vertically from its upper end. Its elongati

Question

A solid uniform metal bar is hanging vertically from its upper end. Its elongation will be _________

Options:

A . Proportional to L and inversely proportional to D²

B . Proportional to L² and inversely proportional to D

C . Proportional of U but independent of D

D . Proportional of L but independent of D

Answer: Option A
Answer: (a).Proportional to L and inversely proportional to D²

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Question 1. A member ABCD is subjected to points load P₁=45kN, P₂, P₃=450kN and P₄=130kN. What will be the total elongation ....2.1x10⁵N/mm². The cross sectional area is 625mm, 2500mm, 1250mm respectively.

Question 2. A steel bar of 20mm x 20mm square cross-section is subjected to an axial compressive load of 100kN. If the length of the....E=200GPa, then what will be the elongation of the bar?

Question 3. A steel rod 10mm in diameter and 1m long is heated from 20 to 100 degree celcius, E = 200 GPa and coefficient of thermal....12 x10⁻⁶ per degree celcius. Calculate the thermal stress developed?

Question 4. A cube with a side length of 1m is heated uniformly a degree celcius above the room temperature and all the sides are fr....the cube? Consider the coefficient of thermal expansion as unity.

Question 5. The thermal stress is a function of _____________ P. Coefficient of linear expansion Q. Modulus of elasticity R. Temper...._____________ P. Coefficient of linear expansion Q. Modulus of elasticity R. Temperature rise

Question 6. Which one of the following pairs is NOT correctly matched?....

Question 7. A steel rod is heated from 25 to 250 degree celcius. Its coefficient of thermal expansion is 10⁻⁵ and E = 100 GN/m&#....free to expand, the thermal stress developed in it is:

Question 8. A steel rod of length L and diameter D, fixed at both ends, is uniformly heated to a temperature rise of δT. The Youngs....is unity. The thermal stress in the rod is ____________

Question 9. Which one of the following are true for the thermal expansion coefficient?....

Question 10. The length, coefficient of thermal expansion and Youngs modulus of bar A are twice of bar B. If the temperature of both ....bar A to that in bar B will be ___________

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