Mechanical properties of solids practice · Hard

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Application +4 | -1

A rigid bar of mass

M

is supported symmetrically by three wires each of length

L

. Those at each end are of copper and the middle one is of iron. The ratio of their diameters, if each is to have the same tension, is equal to

View answer and explanation

Correct option: B

\sqrt{\frac{Y_{\text {iron }}}{Y_{\text {copper }}}}

Option B (

\sqrt{\frac{Y_{\text {iron }}}{Y_{\text {copper }}}}

) is correct because the ratio of diameters is inversely proportional to the square root of Young's modulus when tension and length change are the same.

Revision notes and key takeaways

Review MECHANICAL PROPERTIES OF SOLIDS in your textbook or class notes, then use this set to check your understanding.

Key Takeaways

✓ This set contains 1 single-correct-answer MCQs on MECHANICAL PROPERTIES OF SOLIDS.
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