Large Mass But Low Kinetic Energy

[PrakashPrasad]

Can anyone please let me know an example where a body has large mass but low Kinetic Energy? Please provide some reasons for same.

 

[SDewan]

What exactly do you need it for? Then I may be able to help you better.

 

[PrakashPrasad]

What exactly do you need it for? Then I may be able to help you better.

I am in need of an example of a body having large mass but low kinetic energy? Please let me some reason for same - is an elephant moving uphill an example of same

 

[SDewan]

Going by the definition, KE=1/2*m*v^2
Just consider a fully loaded truck moving slowly in a traffic jam.
This meets the requirement for a heavy body and low KE. The only thing which is in our control is the velocity. So have as low a velocity as possible.

 

[A.T.]

I am in need of an example of a body having large mass but low kinetic energy? Please let me some reason for same - is an elephant moving uphill an example of same

How about a sleeping elephant?

 

[SDewan]

How about a sleeping elephant?

This case, though meets thecriteria, but is an extreme case.

 

[Dale]

Can anyone please let me know an example where a body has large mass but low Kinetic Energy? Please provide some reasons for same.

How about a tectonic plate. 40E21 kg at 1.6E-9 m/s gives a KE of about 50 kJ, which is only enough energy to power a typical incandescent light bulb for about 20 minutes.

 

[A.T.]

How about a tectonic plate.

Or how about any massive object in the rest frame of that object?

 

[Dale]

Yes I thought about that too, which would make it obviously 0.