All Questions
5
questions
4
votes
1
answer
1k
views
Is work done by the internal forces independent of the frame of reference?
This question is about work done being dependent on the frame of reference, which is, obviously the net work done.
I ask what is the reason for the work done by internal forces to be independent of ...
- 362
1
vote
1
answer
123
views
Why is heat energy dissipation in two intervals frame dependent?
The question asks for heat produced in the given specific conditions. It seems like an application of the work-energy theorem with friction doing work on the block and dissipating the heat in the ...
0
votes
1
answer
923
views
Why doesn't a fly in the moving train hit the wall? [duplicate]
Just a simple question but trickier than I expected.
Let us suppose that there is a fly hovering in the moving train. The train moves at a speed much higher than the hovering of the fly. However, the ...
- 1,669
0
votes
1
answer
170
views
Total work done by friction on a system, when friction is static and internal to system? [duplicate]
Will the total work done by friction on a system be always zero if friction is static and internal to the system? Explain if possible by man boat problem as system and no friction is being provided by ...
- 35
1
vote
1
answer
645
views
What will be the total work done by friction on the system (man+boat)? [closed]
As I am seeing this, the man and boat will have different displacement from ground frame, so there should be a net work done by friction . The books says, total work done by friction is zero when ...
- 35