Centre of the Mass (Two-Particle System, Rigid Body) NEET Questions

Physics - Rotational Motion
Centre of the Mass (Two-Particle System, Rigid Body)

Centre of the Mass (Two-Particle System, Rigid Body) MCQ Questions


7.
A uniform disc and a uniform ring of equal mass and radius have their centers of mass at:
A.
Same point
B.
Different points
C.
Depends on shape
D.
Depends on density
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ANSWER :
A. Same point
8.
A projectile explodes in mid-air into two fragments. The center of mass of the system:
A.
Follows a new trajectory
B.
Comes to rest immediately at the point of explosion
C.
Moves in the original trajectory
D.
Moves randomly
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ANSWER :
C. Moves in the original trajectory
9.
In a rigid body, the distance between particles:
A.
Changes
B.
Remains fixed
C.
Deforms
D.
Changes depending on motion
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ANSWER :
B. Remains fixed
10.
The velocity of the center of mass of a system of particles is given by:
A.
Sum of individual velocities
B.
Product of individual masses
C.
Mass-weighted average of velocities
D.
Depends on forces
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ANSWER :
C. Mass-weighted average of velocities
11.
If a rigid body moves with pure translation, then:
A.
All particles have different velocities
B.
All particles have the same velocity
C.
Only a few particles have the same velocity
D.
No relation to motion
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ANSWER :
B. All particles have the same velocity
12.
The center of mass of a uniform triangular lamina is located at:
A.
Centroid
B.
The base
C.
On one vertex
D.
At the midpoint of one side
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ANSWER :
A. Centroid
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