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Rotational Motion question

2025 · 23 Jan · Shift 1 · Q58

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JEE Main
Physics
Rotational Motion
2025 · 23 Jan · Shift 1 · Q58

Rotational Motion question

2025 · 23 Jan · Shift 1 · Q58

JEE MainPhysicsRotational MotionMCQ+4 / −1

A solid sphere of mass '

m

' and radius '

r

' is allowed to roll without slipping from the highest point of an inclined plane of length '

L

' and makes an angle

30^{\circ}

with the horizontal. The speed of the particle at the bottom of the plane is

v_1

. If the angle of inclination is increased to

45^{\circ}

while keeping

L

constant. Then the new speed of the sphere at the bottom of the plane is

v_2

. The ratio

v_1^2: v_2^2

is

A
$1: 3$
B
$1: 2$
C
$1: \sqrt{2}$
D
$1: \sqrt{3}$

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