Chapter 11 – Rotational Mechanics
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Two homogeneous spheres A and B of masses m and 2m having radii 2a and a respectively are placed in touch. The distance of centre of mass from first sphere is
27
Nov
Two homogeneous spheres A and B of masses m and 2m having radii 2a and a respectively are placed in touch. The distance of centre of mass from first sphere is Two homogeneous spheres A and B of masses m and 2m having radii 2a and a respectively are placed in touch. The distance of [...]
A given shaped glass tube having uniform cross section is filled with water and is mounted on a rotatable shaft as shown in figure. If the tube is rotated with a constant angular velocity ω when
27
Nov
A given shaped glass tube having uniform cross section is filled with water and is mounted on a rotatable shaft as shown in figure. If the tube is rotated with a constant angular velocity ω when A given shaped glass tube having uniform cross section is filled with water and is mounted on a rotatable [...]
An elevator starts going up with an acceleration 2 m/s^2. If radius of the wheel attached to the elevator is 0.1 m, then find out number of revolutions in 10 s.
18
Oct
An elevator starts going up with an acceleration 2 m/s^2. If radius of the wheel attached to the elevator is 0.1 m, then find out number of revolutions in 10 s. An elevator starts going up with an acceleration 2 m/s^2. If radius of the wheel attached to the elevator is 0.1 m then find [...]
A communication satellite of 500 kg revolves around the earth in a circular orbit of radius 4.0×10^7 m in the equatorial plane of the earth from west to east. The magnitude of angular momentum of the satellite is
18
Oct
A communication satellite of 500 kg revolves around the earth in a circular orbit of radius 4.0×10^7 m in the equatorial plane of the earth from west to east. The magnitude of angular momentum of the satellite is A sphere of mass 10 kg and radius 0.5 m rotates about a tangent. The moment of [...]
A wheel starts rotating from rest at time t=0 with a angular acceleration of 50 radians/s^2. The angular acceleration (α) decreases to zero value after 5 seconds. During this interval, α varies according to the question α = α0 (1− 5t) The angular velocity at T = 5s will be
18
Oct
A wheel starts rotating from rest at time t=0 with a angular acceleration of 50 radians/s^2. The angular acceleration (α) decreases to zero value after 5 seconds. During this interval, α varies according to the question α = α0 (1− 5t) The angular velocity at T = 5s will be A wheel starts rotating from [...]
A sphere of mass 10 kg and radius 0.5 m rotates about a tangent. The moment of inertia of the sphere is
18
Oct
A sphere of mass 10 kg and radius 0.5 m rotates about a tangent. The moment of inertia of the sphere is A sphere of mass 10 kg and radius 0.5 m rotates about a tangent. The moment of inertia of the sphere is October 18, 2020 Category: AIIMS Last 24 Years Solved 1996 - [...]
Three bodies, a ring, a solid cylinder and a solid sphere roll down the same inclined plane without slipping. They start from rest. The radii of the bodies are identical. Which of the bodies reaches the ground with maximum velocity?
18
Oct
Three bodies, a ring, a solid cylinder and a solid sphere roll down the same inclined plane without slipping. They start from rest. The radii of the bodies are identical. Which of the bodies reaches the ground with maximum velocity? A ring Given V CM = 2 m/s m = 2 kg R = 4 [...]
A child is standing with folded hands at the center of a platform rotating about its central axis. The kinetic energy of the system is K. The child now stretches his arms so that moment of inertia of the system doubles. The kinetic energy of the system now is:
18
Oct
A child is standing with folded hands at the center of a platform rotating about its central axis. The kinetic energy of the system is K. The child now stretches his arms so that moment of inertia of the system doubles. The kinetic energy of the system now is: Given V CM = 2 m/s [...]
Given that force (5i + 7j – 3k) N acts on a particle at position (i + j – k) m. Find torque of this force on the particle about origin.
18
Oct
Given that force (5i + 7j – 3k) N acts on a particle at position (i + j – k) m. Find torque of this force on the particle about origin. Given that force (5i + 7j - 3k) N acts on a particle at position (i + j - k) m. Find torque of [...]
A solid cylinder, a circular disc, a solid sphere and a hollow cylinder of the same radius are placed on an inclined plane. Which of the following will have maximum acceleration at the bottom of the plane?
18
Oct
A solid cylinder, a circular disc, a solid sphere and a hollow cylinder of the same radius are placed on an inclined plane. Which of the following will have maximum acceleration at the bottom of the plane? a circular disc a solid cylinder a solid sphere and a hollow cylinder of the same radius are [...]