A circular platform rotates around a vertical axis with angular velocity `omega=10rad//s`. On the platform is a ball of mass 1kg, attached to the long axis of the platform by a thin of length of 10cm `(alpha=30^(@))`. Find normal force exerted by the ball on the platform (in newton). Friction is absent.

A rod of mass 2 kg ad length 2 m is rotating about its one end O wth an angular velocity omega=4rad//s . Find angular momentum of the rod about the axis rotation.

A rod of mass 2 kg ad length 2 m is rotating about its one end O with an angular velocity omega=4rad//s . Find angular momentum of the rod about the axis rotation.

A circular platform is free to rotate in a horizontal plane about a vertical axis passing through its centre. A tortoise is sitting at the edge of the platform Now, the platform is given an angular velocity omega_(0) . When the tortoise moves along a chord of the platform with a constant velocity (with respect to the platform), the angular velocity of the platform will vary with time t as -

A circular platform is free to rotate in a horizontal plane about a vertical axis passing through its centre. A tortoise is sitting at the edge of the platform. Now the platform is given an angular velocity omega_(0) . When the tortoise move along a chord of the platform with a constant velocity (with respect to the platform),

A circular platform is free to rotate in a horizontal plane about a vertical axis passing through its centre. A tortoise is sitting at the edge of the platform. Now the platform is given an angular velocity omega_(0) . When the tortoise move along a chord of the platform with a constant velocity (with respect to the platform),