AP EAMCET · PHYSICS · Mechanical Properties of Solids
A 4 kg stone attached at the end of a steel wire is being whirled at a constant speed \(12 \mathrm{~ms}^{-1}\) in a horizontal circle. The wire is 4 m long with a diameter 2.0 mm and young's modules of the steel is \(2 \times 10^{11} \mathrm{Nm}^{-2}\). The strain in the wire is.
- A \(2.3 \times 10^{-4}\)
- B \(2.3 \times 10^{-5}\)
- C \(4.6 \times 10^{-4}\)
- D \(6.9 \times 10^{-4}\)
Answer & Solution
Correct Answer
(A) \(2.3 \times 10^{-4}\)
Step-by-step Solution
Detailed explanation
\(\mathrm{M}=4 \mathrm{~kg}, \mathrm{v}=12 \mathrm{~m} / \mathrm{s}, \mathrm{l}=4 \mathrm{~m}, \mathrm{~d}=2 \mathrm{~mm}=2 \times 10^{-3} \mathrm{~m}\) \(\mathrm{Y}=2 \times 10^{11} \mathrm{Nm}^{-2}\) Force developed in the wire,…
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