CBSE Class 11 (Science) Systems of Particles and Rotational Motion — practice questions
61 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 11 (Science) Systems of Particles and Rotational Motion in the app →As per your syllabus, eqn 6.1, the centre of mass of two particles m₁ at x₁ and m₂ at x₂ is which?As per your syllabus, the centre of mass of THREE equal masses placed at the vertices of a triangle lies at whAs per your syllabus, the centre of mass of a UNIFORM (homogeneous) symmetric body lies at which location?As per your syllabus, eqn 6.11, the equation of motion of the centre of mass of a system of particles is whichAs per your syllabus, the total LINEAR MOMENTUM of a system of particles equals which?As per your syllabus, if F_ext on the system is zero, the total linear momentum of the system does which?As per your syllabus, the CM of a continuous distribution is given by which integral?As per your syllabus, a rigid body's general motion can be decomposed into which two kinds?As per your syllabus, when the origin of coordinates is chosen at the centre of mass, what does Σ m_i r_i equaAs per your syllabus, the magnitude of the VECTOR (cross) product A × B is which?As per your syllabus, the vector product is which property algebraically?As per your syllabus, the cross products î × ĵ, ĵ × k̂, k̂ × î equal which respectively?As per your syllabus, eqn 6.19, the linear velocity of a particle of a rigid body rotating with angular velociAs per your syllabus, the TORQUE (moment of force) on a particle at position r due to force F is which vector As per your syllabus, the SI unit of torque is which?As per your syllabus, eqn 6.25a, the ANGULAR MOMENTUM of a particle of momentum p at position r is which?As per your syllabus, the angular momentum L of a particle is zero when which of the following holds?As per your syllabus, the cross product of two PARALLEL vectors is which?As per your syllabus, the dimensions of torque (and angular momentum × time) are which?As per your syllabus, eqn 6.34, the moment of inertia of a system of particles about an axis is which?As per your syllabus, eqn 6.35, the ROTATIONAL kinetic energy of a body about a fixed axis is which?As per your syllabus, if I = M k², then k represents which?As per your syllabus, the moment of inertia of a thin RING of mass M and radius R about an axis ⊥ to its planeAs per your syllabus, the moment of inertia of a uniform DISC of mass M and radius R about its central axis (⊥As per your syllabus, the moment of inertia of a thin ROD of mass M and length L about an axis ⊥ to it throughAs per your syllabus, the moment of inertia of a solid SPHERE of mass M and radius R about its diameter is whiAs per your syllabus, the moment of inertia of a SOLID cylinder of mass M and radius R about its own axis is wAs per your syllabus, the dimensions and SI unit of moment of inertia are which?As per your syllabus, the rotational kinematic equation analogous to v = v₀ + at is which?As per your syllabus, the rotational analogue of v² = v₀² + 2 a x is which?As per your syllabus, a wheel spins up from 1200 rpm to 3120 rpm in 16 s. The angular acceleration is approximAs per your syllabus, eqn 6.41, the rotational analogue of Newton's second law (F = m a) for rotation about a As per your syllabus, the rotational analogue of LINEAR MOMENTUM p = M v is which?As per your syllabus, the WORK done by a torque τ over angular displacement θ is which?As per your syllabus, eqn 6.40, the POWER delivered by a torque is which?As per your syllabus, a rigid body is in MECHANICAL equilibrium when which conditions hold?As per your syllabus, the CENTRE OF GRAVITY of an extended body in a UNIFORM gravitational field coincides witAs per your syllabus, a flywheel of M=20 kg, R=0.2 m has I = MR²/2 = which?As per your syllabus, the angular acceleration of the same flywheel under a 25 N pull (τ = FR = 5 N m) is whicAs per your syllabus, after 2 m of cord unwinds at 25 N pull, the work done by the pull is which?As per your syllabus, the work done by an external torque equals which?No real body is truly rigid because real bodies:The rigid body idealisation works because deformations are often:The centre of mass moves as if all the mass were concentrated:The velocity of the centre of mass equals the total momentum divided by:With zero total external force, the total linear momentum stays:Moment of force is also referred to as:Torque is which kind of physical quantity?The symbol used for torque is the Greek letter:The dimensions of torque are the same as those of:Although its dimensions match work, torque is a quantity that is:The SI unit of moment of force is the:Reversing both r and F leaves the direction of the torque:Translational equilibrium requires the total external force to be:Rotational equilibrium requires the total external torque to be:The centre of gravity is where the total gravitational torque is:In the moment of inertia formula, r is the distance from the axis that is:The parallel axes theorem adds to the centre of mass value the mass times:Rotation about a fixed axis is directly analogous to:The kinetic energy of a rolling body is the sum of translation and:The radius of gyration relates the moment of inertia to the body's: