A football of radius R is kept on a hole of radius r(r < R) made on a plank kept horizontally. One end of the plank is now lifted so that it gets titted making an angle \\theta from the horizontal as shown in the figure below. The maximum value of \theta so that the football does not start rolling down the plank satisfies (figure is schematic and not drawn to scale) [JEE Adv 2020 P1]

Laws of Motion

Section: Physics

Question : 6 of 20

Marks: +1, -0

A football of radius R is kept on a hole of radius r(r<R) made on a plank kept horizontally. One end of the plank is now lifted so that it gets titted making an angle θ from the horizontal as shown in the figure below. The maximum value of theta so that the football does not start rolling down the plank satisfies (figure is schematic and not drawn to scale)

[JEE Adv 2020 P1]

sin‌θ=
r
R
tan‌θ=
r
R
sin‌θ=
r
2R
cos‌θ=
r
2R

Validate

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