Equilibrium of Rigid Bodies, Rigid Body Rotation and Equations of Rotational Motion NEET Questions

Physics - Rotational Motion

Equilibrium of Rigid Bodies, Rigid Body Rotation and Equations of Rotational Motion MCQ Questions


7.

The rolling motion of a cylinder down an inclined plane is best described as:

A.

Pure rotation

B.

Pure translation

C.

A combination of translation of centre of mass and rotation about centre of mass

D.

An accelerated state at rest

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ANSWER :

C. A combination of translation of centre of mass and rotation about centre of mass

8.
In rotational motion about a fixed axis, what is true about all particles of the body?
A.
All have the same linear velocity
B.
All have the same angular velocity
C.
All have the same linear acceleration
D.
All are at rest
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ANSWER :
B. All have the same angular velocity
9.
The rotational kinematic equation analogous to v = u + at is:
A.
ω = ω₀ + αt
B.
ω = ω₀ − αt²
C.
θ = ω₀t
D.
α = ω²/r
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ANSWER :
A. ω = ω₀ + αt
10.
The analogue of s = ut + (1/2)at² in rotational kinematics is:
A.
θ = ω₀² + 2αt
B.
ω = ω₀ t + α t
C.
θ = ω₀ t + (1/2) α t²
D.
α = ω²/2
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ANSWER :
C. θ = ω₀ t + (1/2) α t²
11.
The rotational analogue of v² = u² + 2as is:
A.
α² = ω² + 2ωθ
B.
ω = ω₀ + 2αt
C.
ω² = ω₀² + 2α(θ − θ₀)
D.
θ² = ω² − 2αt
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ANSWER :
C. ω² = ω₀² + 2α(θ − θ₀)
12.
A wheel starts from rest and acquires an angular velocity of 20 rad/s in 5 s under constant angular acceleration. The value of α is:
A.
2 rad/s²
B.
100 rad/s²
C.
5 rad/s²
D.
4 rad/s²
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ANSWER :
D. 4 rad/s²