A string of area of cross-section 4 ~mm² and length 0.5 ~m is connected with a rigid body of mass 2 ~kg. The body is rotated in a vertical circular path of radius 0.5 ~m. The body acquires a speed of 5 ~m / s at the bottom of the circular path. Strain produced in the string when the body is at the bottom of the circle is _ _ _ _ _ × 10⁻⁵. (use Young's modulus 10¹¹ ~N / m² and g=10 ~m / s²)

Properties of Solids and Liquids: JEE Main 2022 Physics question

JEE Main 2022 · 28 Jul, Evening shift · Q65

JEE Main 202228 Jul, Evening shiftPhysicsHardProperties of Solids and Liquids184× since 2002

A string of area of cross-section

4 \mathrm{~mm}^{2}

and length

0.5 \mathrm{~m}

is connected with a rigid body of mass

2 \mathrm{~kg}

. The body is rotated in a vertical circular path of radius

0.5 \mathrm{~m}

. The body acquires a speed of

5 \mathrm{~m} / \mathrm{s}

at the bottom of the circular path. Strain produced in the string when the body is at the bottom of the circle is _________

\times 10^{-5}

. (use Young's modulus

10^{11} \mathrm{~N} / \mathrm{m}^{2}

and

\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^{2}

)

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JEE Main 2022 Properties of Solids and Liquids Question with Answer (28 Jul Evening shift, Q65) | JEE Arc