A thin of length `L` is bent to form a semicircle. The mass of rod is M. What will be the gravitational potential at the centre of the circle ?

A thin rod of length L is bent to form a semi circle. The mass of the rod is M . What will be the gravitational potential at the centre of the circle?

Positive charge Q is uniformly distributed across a thin rod of length L. The rod is then bent in the form of a semicircle. What will be the electric potential at the centre of curvature of semicircle formed?

A thin rod of mass M and length L is bent into a semicircle as shown in diagram. What is a gravitational force on a particle with mass m at the centre of curvature?

A wire of length l and mass m is bent in the form of a semicircle. The gravitational field intensity at the centre of semicircle is

A wire of length l and mass m is bent in the form of a semicircle. The gravitational field intensity at the centre of semicircle is

A positive charge Q is uniformly distributed across a rod of length L. The rod is then bent in the form of a semicircle. What will be the electric field intensity at the centre of curvature of the semicircle thus formed?

A rod of length L and magnetic-moment M is bent to form a semicircular shape.What will be the new magnetic moment?

A thin rod of mass M and length L is bent in a semicircle as shown in figure (a). What is its gravitational force (both magnitude and direction) on a particle with mass m at O the centre of curvature ? (b) what would be the force on m if the rod is in the form of complete circle?