Physics · 2021
JEE Main · 16 March 2021, Shift 2 · Q15
Statement I: A cyclist is moving on an unbanked road with a speed of 7 kmh^-1 and takes a sharp circular turn along a path of radius of 2m without…
Statement I : A cyclist is moving on an unbanked road with a speed of $\displaystyle 7 \mathrm{kmh}^{-1}$ and takes a sharp circular turn along a path of radius of 2m without reducing the speed. The static friction coefficient is 0.2. The cyclist will not slip and pass the curve. $\displaystyle \left(\mathrm{g}=9.8 \mathrm{~m} / \mathrm{s}^2\right)$
Statement II : If the road is banked at an angle of $\displaystyle 45$°, cyclist can cross the curve of 2m radius with the speed of $\displaystyle 18.5 \mathrm{kmh}^{-1}$ without slipping.
In the light of the above statements, choose the correct answer from the options given below.
Official answer
(1)
Both statement I and statement II are true
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.