select the correct alternative.

work done by kinetic friction on a body always results in a loss of its kinetic energy.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Work done on a body, in the motion of that body over a closed loop is zero for every force in nature.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Total mechanical energy of a system is always conserved no matter what type of internal and external forces on the body are present.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

When total work done by a conservative force on the system is positive then the potential energy associated with this force decreased.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D When total work done by a conservative force on the system is positive then the potential energy associated with this force decreased.
$w = - △ u$ (For conservative forces on the system)
$△ u = - w$
If work done is $+ v e$ ,
Then $△ u = - v e$
$∴$ Potential energy decreases.

Suggest Corrections

Similar questions

(b) Total energy of a system is always conserved, no matter what internal and external forces on the body are present.

(d) In an inelastic collision, the final kinetic energy is always less than the initial kinetic energy of the system.

(b) Work done by a body against friction always results in a loss of its kinetic / potential energy.

(c) The rate of change of total momentum of a many-particle system is proportional to the external force / sum of the internal forces on the system.

Join BYJU'S Learning Program