Questions on topic center of mass from class 11 physics

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Q1. 1. What is the center of mass of a system?

A point where the total mass of the system can be considered to be concentrated

A point where the force of gravity acts

A point where the system is in equilibrium

A point where the system has maximum kinetic energy

Q2. 2. For a two-particle system, the center of mass lies closer to which particle?

The particle with larger mass

The particle with smaller mass

Equidistant from both particles

None of the above

Q3. 3. The center of mass of a uniform rod lies at:

One-fourth of its length from either end

One-third of its length from either end

Midpoint of the rod

One-fifth of its length from either end

Q4. 4. In a system of particles, if the external force acting on the system is zero, the center of mass:

Remains stationary

Moves with a constant velocity

Accelerates

Rotates

Q5. 5. The position vector of the center of mass (R_cm) of a system of particles is given by:

R_cm = (∑m_i * r_i) / ∑m_i

R_cm = ∑m_i * r_i

R_cm = ∑r_i / ∑m_i

R_cm = (∑r_i) / ∑m_i

Q6. 6. The velocity of the center of mass of a system of particles is:

Equal to the velocity of the heaviest particle

The mass-weighted average of the velocities of all particles

The sum of the velocities of all particles

Zero if the system is isolated

Q7. 7. For a system of particles, the total linear momentum is given by:

P_total = M * V_cm

P_total = V_cm / M

P_total = M / V_cm

P_total = M * A_cm

Q8. 8. If the center of mass of a system moves in a straight line, the system:

Is in rotational motion

Is in translational motion

Is in vibrational motion

Is in equilibrium

Q9. 9. The center of mass of a system of particles can be outside the physical boundaries of the system:

True

False

Depends on the shape of the system

Depends on the mass distribution

Q10. 10. In a collision between two particles, the position of the center of mass:

Changes if the system is isolated

Remains the same if no external force acts

Always changes regardless of external forces

Cannot be determined

Questions on topic center of mass from class 11 physics

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