A body of mass M is attached to the lower end of a metal wire, whose upper end is fixed. The elongation of the wire is l. (a) Loss in gravitational potential energy of M is Mgl. (b) The elastic potential energy stored in the wire is Mgl. (c) The elastic potential energy stored in the wire is 1/2 Mgl. (d) Heat produced is 1/2 Mgl.

A body of mass M is attached to the lower end of a metal wire, whose u

1.	A body of mass M is attached to the lower end of a metal wire, whose upper end is fixed. The elongation of the wire is l. (a) Loss in gravitational potential energy of M is Mgl. (b) The elastic potential energy stored in the wire is Mgl. (c) The elastic potential energy stored in the wire is 1/2 Mgl. (d) Heat produced is 1/2 Mgl.
Answer» Correct option is: (a, c, & d)