Physics · 2020
JEE Main · 3 September 2020, Shift 2 · Q21
A block starts moving up an inclined plane of inclination 30° with an initial velocity of v_0. It comes back to its initial position with velocity…
A block starts moving up an inclined plane of inclination $\displaystyle 30$° with an initial velocity of $\displaystyle v_0$. It comes back to its initial position with velocity $\displaystyle \frac{v_0}{2}$. The value of the coefficient of kinetic friction between the block and the inclined plane is close to $\displaystyle \frac{I}{1000}$, The nearest integer to $\displaystyle I$ is
\_\_\_\_.
Official answer
346
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.