Is work done if you carry a book across the room at a constant velocity?
2 answers:
Answer:
NO
Explanation:
As we know by work energy theorem that work done by all forces is given by change in kinetic energy of the system
it is given as
so here since the kinetic energy is constant for the system
so here change in kinetic energy is zero
hence the net work done must be zero
Here we know that
so here we can say that
so no work is required to move the books at constant speed from one position to other position
Yes because it has been moved from its original point. if had stayed inone spot or had been dropped no work would have been done.
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A - the amount of time needed to travel the distance The formula for speed is distance/time and the unit is m/s. Therefore you divide the distance travelled by the time it took to travel it.
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Answer:
Explanation:
As per Faraday's law of Electromagnetic induction we know that
Rate of change in magnetic flux will induce EMF in the closed conducting loop
so we have
now we have
now we have
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34 I have too add this to submit