
The figure shown is an overhead view of a thin uniform rod of length and mass rotating horizontally at angular speed about an axis passing through its centre. A particle of mass initially attached to the end is ejected from the rod with velocity which is perpendicular to the rod at the instant of ejection. If and is more than the speed of rod end just after the ejection, then the value of is




Important Questions on System of Particles and Rotational Motion
Uniform rod of mass , length is suspended with the help of two ideal strings as shown. Complete arrangement is in equilibrium in vertical plane. Find value of so that string remains vertical (assuming rod is horizontal).

Ends and of a rigid uniform rod of mass parallel to -axis have velocities as shown. A point mass is also attached at the end of rod, then the angular momentum of system about point will be

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

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

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

A uniform circular disc of mass and radius is fixed to vertical axis with the help of a rod of length as shown. The disc rolls on a horizontal surface and is free to rotate about its centre. If there is no slipping at the point of contact of disc and horizontal surface then kinetic energy of the disc will be (given )

A uniform circular disc of mass and radius is having a point mass at its circumference is performing rolling without slipping over a rough horizontal surface as shown. Acceleration of point is towards right. If is the normal reaction on disc by the horizontal surface at this instant then

A block of mass is connected to another block of mass by a massless spring of spring constant . Blocks are kept on a smooth horizontal plane. Initially both the blocks are at rest and spring is unstressed. Force is applied on to right as shown in the figure then which of the following is correct?
