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 A loudspeaker .
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.
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:
Microphone
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 petrol engine of a running car
If an electric iron of 1200 W is used for 30 minutes every day, find electric energy consumed in the month of April.
Define watt. Express kilowatt in terms of joule per second. A 150 kg car engine develops 500 W for each kg. What force does it exert in moving the car at a speed of 20 ms–1?
For burning of coal in a thermoelectric station, the energy conversion taking place is:
State the energy changes in the following case while in use:
A glowing electric bulb
