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JEE MAIN 2019
11-01-2019 S2
Question
A string is wound around a hollow cylinder of mass 5 kg and radius 0.5 m. If the string is now pulled with a horizontal force of 40 N, and the cylinder is rolling without slipping on a horizontal surface (see figure), then the angular acceleration of the cylinder will be (Neglect the mass and thickness of the string) :
Select the correct option:
A
$16 \mathrm{rad} / \mathrm{s}^2$
B
$20 \mathrm{rad} / \mathrm{s}^2$
C
$12 \mathrm{rad} / \mathrm{s}^2$
D
$10 \mathrm{rad} / \mathrm{s}^2$
✓ Correct! Well done.
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