MEDIUM
JEE Main/Advance
IMPORTANT
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Figure shows a uniform planar object. Height of centre of mass of object from base AB is

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Important Questions on System of Particles and Rotational Motion

MEDIUM
JEE Main/Advance
IMPORTANT

A thin uniform rod AB of length L and mass 2.0 kg has a purely translational motion with acceleration 1.0 m s-2 under the action of forces F1 and F2. If F1=10.0 N  and a=30 cm, then the values of L and F2 respectively are

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HARD
JEE Main/Advance
IMPORTANT

A uniform cube of mass 2.0 kg rests or a rough horizontal surface with coefficient of friction μ=0.2 A force F is applied on the cube as shown. The range of value of F for which the cube will slide without toppling is given by g=10 m s-2

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HARD
JEE Main/Advance
IMPORTANT

The figure shown is an overhead view of a thin uniform rod of length L and mass M rotating horizontally at angular speed ω about an axis passing through its centre. A particle of mass m initially attached to the end A is ejected from the rod with velocity Vp which is perpendicular to the rod at the instant of ejection. If ω=10.0 rad s-1, L=1.0m, m=M and Vp is 4 m s-1 more than the speed of rod end A just after the ejection, then the value of Vp is 

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MEDIUM
JEE Main/Advance
IMPORTANT

Uniform rod of mass M, length 2L is suspended with the help of two ideal strings as shown. Complete arrangement is in equilibrium in vertical x-y plane. Find value of F0 so that string 1 remains vertical (assuming rod is horizontal).

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HARD
JEE Main/Advance
IMPORTANT

Ends A and B of a rigid uniform rod of mass M parallel to Y-axis have velocities vA=v0i^,vB=2v0i^ as shown. A point mass M is also attached at the end B of rod, then the angular momentum of system about point O will be

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MEDIUM
JEE Main/Advance
IMPORTANT

Consider a rigid body which consist of uniform hemispherical shell of radius R and uniform cylindrical shell of height L and radius R (material of hemispherical shell and cylindrical shell are same). Find maximum value of L so that complete rigid body remains in stable equilibrium in the position shown (neglect friction).

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EASY
JEE Main/Advance
IMPORTANT

Horizontal force F0 is applied on a uniform circular disc of mass M and radius R which can rotate in vertical x-y plane about an axes passing through O as shown. What is the acceleration of bottom most point P on the disc at this instant?

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EASY
JEE Main/Advance
IMPORTANT

Consider the shown diagram. A fixed vertical smooth rod AB is kept in front of a uniform disc of mass m and radius R which is rolling without slipping on a rough horizontal surface. Velocity of centre of disc is 3 m s-1. A rod PQ of length 2 m is connected with disc at Q, (point Q is at a vertical distance of R2 from centre of disc) by pin joint and other end of rod PQ can freely slide over smooth vertical rod AB. At this instant rod PQ makes an angle θ=150° with rod AB as shown. Find the angular velocity of rod at this instant.

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