Physics · 2021
JEE Main · 16 March 2021, Shift 1 · Q5
A block of mass m slides along a floor while a force of magnitude F is applied to it at an angle θ as shown in figure. The coefficient of kinetic…
A block of mass $\displaystyle m$ slides along a floor while a force of magnitude $\displaystyle F$ is applied to it at an angle $\displaystyle \theta$ as shown in figure. The coefficient of kinetic friction is $\displaystyle \mu_{\mathrm{K}}$. Then, the block's acceleration ' a ' is given by:
(g is acceleration due to gravity)
Official answer
(4)
$\displaystyle \frac{F}{m} \cos \theta-\mu_K\left(g-\frac{F}{m} \sin \theta\right)$
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.