Physics
From a disc of radius R and mass M, a circular hole of diameter R, whose rim passes through the centre is cut. What is the moment of inertia of the remaining part of the disc about a perpendicular axis, passing through the centre?
29
Aug
From a disc of radius R and mass M, a circular hole of diameter R, whose rim passes through the centre is cut. What is the moment of inertia of the remaining part of the disc about a perpendicular axis, passing through the centre? a circular hole of diameter R From a disc of radius [...]
A particle of mass m moves in the XY plane with a velocity v along the straight line AB. If the angular momentum of the particle with respect to origin O is LA when it is at A and LB when it is at B, then :
29
Aug
A particle of mass m moves in the XY plane with a velocity v along the straight line AB. If the angular momentum of the particle with respect to origin O is LA when it is at A and LB when it is at B, then : A particle of mass m moves in the [...]
A circular disc of moment of inertia It is rotating in a horizontal plane about its symmetry axis with a constant angular velocity ωi. Another disc of moment of inertia Ib is dropped co-axially onto the rotating disc. Initially, the second disc has zero angular speed. Eventually, both the discs rotate with a constant angular speed ωf. The energy lost by the initially rotating disc due to friction.
29
Aug
A circular disc of moment of inertia It is rotating in a horizontal plane about its symmetry axis with a constant angular velocity ωi. Another disc of moment of inertia Ib is dropped co-axially onto the rotating disc. Initially, the second disc has zero angular speed. Eventually, both the discs rotate with a constant angular [...]
When a mass is rotating in a plane about a fixed point, its angular momentum is directed along
29
Aug
When a mass is rotating in a plane about a fixed point, its angular momentum is directed along its angular momentum is directed along When a mass is rotating in a plane about a fixed point August 29, 2020 Category: Chapter 11 - Rotational Mechanics , NEET Last 32 Years Solved 1988 - 2019 Physics [...]
A mass, m, moves in a circle on a smooth horizontal plane with velocity, V0, at a radius, R0. The mass is attached to a string which passes through a smooth hole in the plane as shown. The tension in the string is increased gradually and finally m moves in a circle of radius 2/R0. The final value of the kinetic energy is
29
Aug
A mass, m, moves in a circle on a smooth horizontal plane with velocity, V0, at a radius, R0. The mass is attached to a string which passes through a smooth hole in the plane as shown. The tension in the string is increased gradually and finally m moves in a circle of radius 2/R0. [...]
Two discs of same moment of inertia rotating about their regular axis passing through centre and perpendicular to the plane of disc with angular velocities ω1 and ω2. They are brought into contact face to face coinciding the axis of rotation. The expression for loss coinciding of energy during this process is:
29
Aug
Two discs of same moment of inertia rotating about their regular axis passing through centre and perpendicular to the plane of disc with angular velocities ω1 and ω2. They are brought into contact face to face coinciding the axis of rotation. The expression for loss coinciding of energy during this process is: initial position and [...]
The radius of circle, the period of revolution, initial position and sense of revolution are indicated in the fig. y – projection of the radius vector of rotating particle P is :
28
Aug
The radius of circle, the period of revolution, initial position and sense of revolution are indicated in the fig. y – projection of the radius vector of rotating particle P is : initial position and sense of revolution are indicated in the fig. y - projection of the radius vector of rotating particle P is [...]
A body initially rest and sliding along a frictionless trick from a height h (as shown in the figure) just completes a vertical circle of diameter AB=D. The height h is equal to
28
Aug
A body initially rest and sliding along a frictionless trick from a height h (as shown in the figure) just completes a vertical circle of diameter AB=D. The height h is equal to A body initially rest and sliding along a frictionless trick from a height h (as shown in the figure) just completes a [...]
A mass m is attached to a thin wire and whirled in a vertical circle. The wire is most likely to break when :
28
Aug
A mass m is attached to a thin wire and whirled in a vertical circle. The wire is most likely to break when : A mass m is attached to a thin wire and whirled in a vertical circle. The wire is most likely to break when : August 28, 2020 Category: Chapter 10 - [...]
What is the minimum velocity with which a body of mass m must enter a vertical loop of radius R so that it can complete the loop?
28
Aug
What is the minimum velocity with which a body of mass m must enter a vertical loop of radius R so that it can complete the loop? What is the minimum velocity with which a body of mass m must enter a vertical loop of radius R so that it can complete the loop? August [...]