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Results tagged with work
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user 82564
The product of the force on an object and the displacement the object undergoes along the direction of the force.
0
votes
2
answers
94
views
Am I correct in rejecting this example of No-work force?
The work done by a porter in carrying a luggage on head while walking on a horizontal force is $0$ as the gravitational force is at $90^0$ with the horizontal plain. …
- 785
0
votes
1
answer
49
views
How is work constant when I raise a body to a height?
My friend asked me-
Imagine that we pull up a pen which is initially at the ground slowly upwards.At a certain point we see that its total energy is due to its P.E.So,how can we say total energy i …
- 785
2
votes
How to prove that gravitational potential energy of a body of mass $m$ at a height $h$ is $m...
By definition we know that-
Gravitational Potential Energy of a body is the work done against gravity in raising it to a certain height h. … We have$$
\text{work}~~=~~\text{force}~\times~\text{displacement}
\,.$$
Here force of the body is the weight acting vertically downwards=$mg$ and displacement is $h.$
So,$$
\text{work}
~=~mg\cdot h
~ …
- 785