Chapter 11 – Rotational Mechanics
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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.
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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
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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 [...]
A ring of mass m and radius r rotates about an axis passing through its centre and perpendicular to its plane with angular velocity omega. Its kinetic energy is
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Aug
A ring of mass m and radius r rotates about an axis passing through its centre and perpendicular to its plane with angular velocity omega. Its kinetic energy is A ring of mass m and radius r rotates about an axis passing through its centre and perpendicular to its plane with angular velocity omega. Its [...]
A fly wheel rotating about a fixed axis has a kinetic energy of 360J. When its angular speed is 30 rad/s. The moment of inertia of the wheel about the axis of rotation is
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Aug
A fly wheel rotating about a fixed axis has a kinetic energy of 360J. When its angular speed is 30 rad/s. The moment of inertia of the wheel about the axis of rotation is A fly wheel rotating about a fixed axis has a kinetic energy of 360J. When its angular speed is 30 rad/s. [...]
The moment of inertia of a body about a given axis is 1.2 kg m^2. Initially the body is at rest. In order to produce a rotational kinetic energy of 1500 J, an angular acceleration of 25 rad/s^2 must be applied about that axis for a duration of
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Aug
The moment of inertia of a body about a given axis is 1.2 kg m^2. Initially the body is at rest. In order to produce a rotational kinetic energy of 1500 J, an angular acceleration of 25 rad/s^2 must be applied about that axis for a duration of an angular acceleration of 25 rad/s^2 must [...]
The angular speed of an engine wheel making 90 rev/min is
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Aug
The angular speed of an engine wheel making 90 rev/min is The angular speed of an engine wheel making 90 rev/min is August 25, 2020 Category: Chapter 11 - Rotational Mechanics , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
If a fly wheel makes 120 revolutions per minute then its angular speed will be
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Aug
If a fly wheel makes 120 revolutions per minute then its angular speed will be If a fly wheel makes 120 revolutions per minute then its angular speed will be August 25, 2020 Category: Chapter 11 - Rotational Mechanics , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics [...]
A couple produces
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Aug
A couple produces A couple produces August 25, 2020 Category: Chapter 11 - Rotational Mechanics , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,