Advertisements
Advertisements
प्रश्न
Can any object have momentum even if its mechanical energy is zero? Explain
Advertisements
उत्तर
No, if mechanical energy = kinetic energy + potential
energy = 0,
So, potential energy = kinetic energy = 0
or `1/2"mv"^2` = 0 or v = 0
So, momentum, p = mv = 0
Any object can not have momentum even if
its mechanical energy is zero.
APPEARS IN
संबंधित प्रश्न
State the energy changes in the following case while in use:
A ceiling fan
Fill in the blank
Green plants convert _________ energy into chemical energy.
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in the burning of a match stick.
State the energy changes in the following case while in use:
Washing machine
State the energy changes in the following case while in use:
A solar cell
A metal ball of mass 2 kg is allowed to fall freely from rest from a height of 5 m above the ground. What happens to the mechanical energy after the ball hits the ground and comes to rest?
Choose the odd one:
Can any object have mechanical energy even if its momentum is zero? Explain.
The velocity of a body moving in a straight line is increased by applying a constant force F, for some distance in the direction of the motion. Prove that the increase in the kinetic energy of the body is equal to the work done by the force on the body.
The energy conversion in a washing machine is from ______.
