1.

In the absence of external torque for a body revolving about any axis, the quantity that remains constant is

Answer»

kinetic energy
POTENTIAL energy
linear momentum
angular momentum

Solution :In the absence of EXTERNAL TORQUE for a body REVOLVING about any AXIS , the angular momentum remains constant . This is known as law of conservation of angular momentum
`vectau = (d vecL)/(dt)`
As `vectau = 0 therefore (dvecL)/(dt) =0` or `vecL = ` constant


Discussion

No Comment Found