A ring of mass `m_(1)` and radius R is fixed in space at some location. An external agent brings a point mass `m_(2)` from infinity to centre of the ring. Work done by the external agent will be

The work done by an external agent to shift a point mass from infinity to the centre of the earth is W . Then choose the correct relation.

For a uniform ring of mass M and radius R at its centre

For a uniform ring of mass M and radius R at its centre

Two identical charged rings of charge Q=1Ca and radius R =0.1m are separated by a distance sqrt(3)R and are fixed. A point charge of charge q=1.0times10^(-9) Cand mass m= 2kg is moved by external agent from the centre of left ring to the centre of right ring. Find the work done by an external agent in joule.

Two identical charged rings of charge Q=1C and radius R=0.1m are separated by a distance sqrt(3)R and are fixed.A point charge of charge q=1.0times10^(-9)C and mass m=2kg is moved by external agent from the centre of left ring to the centre of right ring.Find the work done by an external agent in joule.

A fixed ring of radius R is given a charge q. A charge q_0 is brought slowly from infinity to the centre of the ring. The wrong statement is-

A fixed ring of radius R is given a charge q. A charge q_0 is brought slowly from infinity to the centre of the ring. The wrong statement is-

A ring having non-uniform distribution of mass M and radius R is being considered. A point mass m_(0) is taken slowly towards the ring. In doing so, work done by the external force against the gravitational force exerted by ring is

A ring having non-uniform distribution of mass M and radius R is being considered. A point mass m_(0) is taken slowly towards the ring. In doing so, work done by the external force against the gravitational force exerted by ring is

A thin ring of mass m and radius R is in pure rolling over a horizontal surface. If v_0 is the velocity of the centre of mass of the ring, then the angular momentum of the ring about the point of contact is