ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge - Page 40

Question 196

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Where is the center of mass located in a sphere of uniform density?

At the geometric center
On the surface
At the topmost point
Outside the sphere

Question 197

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How is the kinetic energy of a system of particles expressed in terms of center of mass motion?

K = K' + V
K = K' + (1/2)MV²
K = (1/2)MV² only
K = K' + M²V

Question 198

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What condition ensures zero gravitational torque on a body?

When mass is zero
When gravity is zero
When it is supported at its center of gravity
When angular velocity is zero

Question 199

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How does variation in gravitational field affect the center of gravity?

It has no effect
It makes them identical
It causes the center of gravity to differ from the center of mass
It reduces mass

Question 200

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What is the direction of the angular velocity vector?

Tangential to the path
Radially outward
Along the axis of rotation following the right-hand rule
Opposite to force