All Questions
4
questions
4
votes
2
answers
599
views
Work done changes between reference frames?
(This is not homework; a friend shared with me this puzzler and neither of us can figure it out.) Suppose you are in a plane traveling at velocity $v_1$ relative to the ground. The flight attendent ...
- 43
1
vote
3
answers
594
views
What is the correct way to estimate the work done by a climber?
My teacher gave us a worksheet with word problems and their solutions. It is in German, so I have tried my best to translate it to English:
A 26 year old man climbs Mount Everest (8848 m) in only 8 ...
- 19
3
votes
2
answers
616
views
Net Work Done When Lifting an Object at a constant speed [duplicate]
I am confused about the amount of work done when lifting an object at a constant speed. If you find the work done by you on the object and the work done by gravity on the object and add them the net ...
- 43
1
vote
3
answers
5k
views
Concept of work done by spring
While deriving work done by spring force, our main problem is we cannot take out ${\bf F}$ vector out of the integral because it is not constant.
Hence we adopt the following method-
Considering a ...
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