moment of inertia of a disc of mass M and radius R about any of its diameters = mR^2/4
Sahay Sir > Question Answers > moment of inertia of a disc of mass M and radius R about any of its diameters = mR^2/4
A rope of negligible mass is wound round a hollow cylinder of mass 3 kg and radius 40 cm. What is the angular acceleration of the cylinder if the rope is pulled with a force of 30 N? What is the linear acceleration of the rope ? Assuming that there is no slipping.
27
Nov
A rope of negligible mass is wound round a hollow cylinder of mass 3 kg and radius 40 cm. What is the angular acceleration of the cylinder if the rope is pulled with a force of 30 N? What is the linear acceleration of the rope ? Assuming that there is no slipping. find its [...]
(a) A child stands at the centre of a turntable with his two arms outstretched. The turntable is set rotating with an angular speed of 40 rev/min. How much is the angular speed of the child if he folds his hands back and thereby reduces his moment of inertia to 2/5 times the initial value ? Assume that the turntable rotates without friction. (b) Show that the child’s new kinetic energy of rotation is more than the initial kinetic energy of rotation. How do you account for this increase in kinetic energy?
27
Nov
(a) A child stands at the centre of a turntable with his two arms outstretched. The turntable is set rotating with an angular speed of 40 rev/min. How much is the angular speed of the child if he folds his hands back and thereby reduces his moment of inertia to 2/5 times the initial value [...]
A solid cylinder of mass 20 kg rotates about its axis with angular speed 100 rad s^−1. The radius of the cylinder is 0.25 m. What is the kinetic energy associated with the rotation of the cylinder? What is the magnitude of angular momentum of the cylinder about its axis?
27
Nov
A solid cylinder of mass 20 kg rotates about its axis with angular speed 100 rad s^−1. The radius of the cylinder is 0.25 m. What is the kinetic energy associated with the rotation of the cylinder? What is the magnitude of angular momentum of the cylinder about its axis? find its moment of inertia [...]
Given, moment of inertia of a disc of mass M and radius R about any of its diameters = mR^2/4, find its moment of inertia about an axis normal to the disc and passing through a point on its edge.
27
Nov
Given, moment of inertia of a disc of mass M and radius R about any of its diameters = mR^2/4, find its moment of inertia about an axis normal to the disc and passing through a point on its edge. find its moment of inertia about an axis normal to the disc and passing through [...]