BITSAT 2024 | Rotational Motion Question 1 | Physics

A rigid body rotates about a fixed axis with variable angular velocity equal to $ \alpha-\beta t $, at the time $ t $, where $ \alpha, \beta $ are constants. The angle through which it rotates before it stops is

$ \frac{\alpha^{2}}{2 \beta} $

$ \frac{\alpha^{2}-\beta^{2}}{2 \alpha} $

$ \frac{\alpha^{2}-\beta^{2}}{2 \beta} $

$ \frac{(\alpha-\beta) \alpha}{2} $

BITSAT 2023

MCQ (Single Correct Answer)

-1

Two rings of radius $$R$$ and $$n R$$ made of same material have the ratio of moment of inertia about an axis passing through centre is $$1: 64$$. The value of $$n$$ is

2$$\sqrt2$$

1/2

BITSAT 2023

MCQ (Single Correct Answer)

-1

A thin but rigid semicircular wire frame of radius $$r$$ is hinged at $$O$$ and can rotate in its own vertical plane. A smooth peg $$P$$ starts from $$O$$ and moves horizontally with constant speed $$2 v_0$$ lifting the frame upward as shown in figure. Find the angular velocity $$\omega$$ of the frame when its diameter makes an angle of $$60^{\circ}$$ with vertical.

BITSAT 2023 Physics - Rotational Motion Question 3 English

$$v_0 / r$$

$$v_0 / 2 r$$

$$2 v_0 / r$$

$$v_0 r$$

BITSAT Subjects

English Proficiency

Comprehension Ability Rearrangement Fill in the Blanks Grammar Vocabulary

Logical Reasoning

Verbal

Direction Sense Test Analogy Classification Series Completion Blood Relations Logical Deduction Logic Chart

Non Verbal

Completion of Figure Figure Formation Paper Folding and Cutting Figure Matrix Rule Detection Mirror Image