Match the following :
`{:(,"Column-I",," Column-II"),("(A)","Work done by all the forces",,"(P)Change in potential energy"),("(B)","Work done by conservative forces",,"(Q) Change in kinetic energy"),("(C)","Work done by external forces",,"(R) Change in mechanical energy"),(,,,"(S) None"):}`

Work done by the conservative force on a system is equal to :

Work done by various forces, Potential and kinetic energy. Conservative and non conservative forces

Acceleration versus x and potential energy versus x graph of a particle moving along x-axis is as shown in figure. Mass of the particle is 1 kg and velocity at x = 0 is 4 m/s. Match the following at x = 8m. {:(,"column I","columnII",),((A),"Kinetic Energy",(P),120 J),((B),"Work done by conservative forces", (Q) 240 J,),((C),"Total work done on the particle", (R) 128 J,),((D),"Work done by forces other than conservative forces", (S) 112J,),(,,(T),"None"):}

The work done by the external forces on a system equals the change in

When work is done on a body by an external force, its

A : Work done by the frictional force can’t be positive. R : Frictional force is a conservative force.

The total work done on a particle is equal to the change in its mechanical energy