Advertisements
Advertisements
Question
Can any object have momentum even if its mechanical energy is zero? Explain
Advertisements
Solution
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
RELATED QUESTIONS
State the energy changes in the following while in use An electric oven.
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in a loaded truck when started and set in motion.
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in photosynthesis in green leaves.
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in respiration.
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:
a steam engine
State the energy changes in the following case while in use:
Bio-gas burner
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?
If an electric iron of 1200 W is used for 30 minutes every day, find electric energy consumed in the month of April.
State the energy changes in the following case while in use:
An electric cell in a circuit
