Home
Class 11
PHYSICS
A small ball of mass m suspended from th...

A small ball of mass `m` suspended from the celling at a point `O` by a thread of length `l` moves along a horizontal circle with a constant angular velocity `omega`.
.

A

linear momentum of system (ball + rod) is conserved

B

angular momentum about C is conserved

C

kinetic energy of system (ball + rod) before the collision is equal to kinetic energy of system just after the collision

D

linear momentum of ball is conserved

Text Solution

Verified by Experts

The correct Answer is:
B, C, D
Since ball moves with constant angular velocity inhorizontal circle than
(A) For angular momentum about `A`, it will have angular momentum perpendicular to `l` That will have two component one along `CO` which is constant and another in the plane which canges direction.
(B) Angular momentum about `C` is constant `(mvr)` along `OC`.
Promotional Banner

Similar Questions

Explore conceptually related problems

A small ball of mass m suspended from the ceiling at a point O by a thread of length l moves along a horizontal circle with a constant angular velocity omega . Relative to which points does the angular momentum M of the ball remain constant? Find the magnitude of the increment of the vector of the ball's angular momentum relative to the point O picked up during half a revolution.

For a particle moving in a horizontal circle with constant angular velocity:

Consider a conical pendulum having bob is mass m is suspended from a ceiling through a string of length L. The bob moves in a horizontal circle of radius r. Find (a) the angular speed of the bob and (b) the tension in the string.

A particle of mass m is suspended from a ceiling through a string of length L. The particle moves in a horizontal circle of radius r such that r =L/(sqrt2) . The speed of particle will be :

A point mass m is suspended from a light thread of length l, fixed at O, is whirled in a horizontal circle at constant speed as shown. From your point of view, stationary with respect to the mass, the forces on the mass are

A small ball is suspended from a point O by a light thread of length l. Then the ball is drawn aside so that thread deviates through an angle theta from the vertical and set in motion in a horizontal direction at right angles to the vertical plane in which the thread is located. What is the initial velocity that has to be imparted to the ball so that it could deviate through the maximum angle pi//2 in the process of motion?

Three balls each of mass 1 kg are attached with three strings each of length 1 m as shown in figure. They are rotated in a horizontal circle with angular velocity omega=4"rad s"^(-1) about point O. Match the following columns.

A body of mass m s connected to an inextensible thread of length L si whirled in horizontal circle. Find the maximum angular velocity with which it can be whirsted without breaking the thread (Breaking stress of thread =S )

A particle of mass m is attached to one end of a weightless and inextensible string of length L. The particle is on a smooth horizontal table. The string passes through a hole in the table and to its other and is attached a small particle of equal mass m. The system is set in motion with the first particle describing a circle on the table with constant angular velocity omega_(1) and the second particle moving in the horizontal circle as a conical pendulum with constant angular velocity omega_(2) Show that the length of the portions of the string on either side of the hole are in the ratio omega_(2)^(2): omega_(1)^(2)