Home
Class 12
PHYSICS
A circular platform rotates around a ver...

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.

Text Solution

Verified by Experts

The correct Answer is:
5
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

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 thin circular ring of mass M and radius R is rotating about its axis with constant angular velocity omega . The objects each of mass m are attached gently to the ring. The wheel now rotates with an angular velocity.

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 thin circular ring of mass M and radius r is rotating about its axis with a constant angular velocity omega . Two objects each of mass m are attached gently to the opposite ends of a diameter of the ring. The ring will now rotate with an angular velocity of

A circular disc of radius R is rotating about its axis O with a uniform angular velocity omega"rad s"^(-1) as shown in the figure. The magnitude of the relative velocity of point A relative to point B on the disc is

A platform is moving upwards with an accelerations of 5ms^(-2) . At the moment when its velocity is u = 3ms^(-1) , a ball is thrown from it with a speed of 30 ms^(-1) w.r.t. platform at an angle of theta = 30^@ with horizontal. The time taken by the ball to return to the platform is

A rod of mass M and length l attached with a small bob of mass m at its end is freely rotating about a vertical axis passing through its other end with a constant angular speed omega . Find the force exerted by the system (rod and bob) on the pivot. Assume that gravity is absent.

A thin circular ring of mass M and radius r is rotating about its axis with a constant angular velocity omega , Two objects, each of mass m, are attached gently to the opposite ends of a diameter of the ring. The wheel now rotates with an angular velocity omega=

A whel of mass 2kg an radius 10 cm is rotating about its axis at an angular velocity of 2pirad//s the force that must be applied tangentially to the wheel to stop it in 5 revolutions is

A uniform disk of mass 300kg is rotating freely about a vertical axis through its centre with constant angular velocity omega . A boy of mass 30kg starts from the centre and moves along a radius to the edge of the disk. The angular velocity of the disk now is