find the relation for work done in pulling mass at the end of fixed string?
Answers
Answer:
The work done by a constant force of magnitude F on a point that moves a displacement d in the direction of the force is the product: W = Fd.
Integration approach can be used both to calculate work done by a variable force and work done by a constant force.
The SI unit of work is the joule; non- SI units of work include the erg, the foot-pound, the foot-poundal, the kilowatt hour, the litre-atmosphere, and the horsepower-hour.
Key Terms
work: A measure of energy expended in moving an object; most commonly, force times displacement. No work is done if the object does not move.
force: A physical quantity that denotes ability to push, pull, twist or accelerate a body, which is measured in a unit dimensioned in mass × distance/time² (ML/T²): SI: newton (N); CGS: dyne (dyn)
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