Physics · 2021
JEE Main · 18 March 2021, Shift 2 · Q24
A ball of mass 4 kg, moving with a velocity of 10 ms^-1, collides with a spring of length 8 m and force constant 100 Nm^-1. The length of the…
A ball of mass $\displaystyle 4$ kg , moving with a velocity of $\displaystyle 10 \mathrm{~ms}^{-1}$, collides with a spring of length $\displaystyle 8$ m and force constant $\displaystyle 100 \mathrm{Nm}^{-1}$. The length of the compressed spring is $\displaystyle x \mathrm{~m}$. The value of $\displaystyle x$, to the nearest integer, is \_\_\_\_.
Official answer
6
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.