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How much work is done on a 60-N box of books that you carry horizontally across a 6-M room?
Wiki User
∙ 11y ago
10 joules
Wiki User
∙ 11y ago
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How much work is done on a 50-J rock that you carry horizontally across a 10-m room?
First of all, I don't recognize the letter 'J' as the unit of any quantity that relatesto this question. Surely you don't mean a 50-Joule rock ! That would be quitemeaningless, as the Joule is a unit of energy, and a rock can have any quantityof energy at all, depending on its position, speed, etc.But be that as it may ... and it clearly is ... no force, and thus no work, is requiredto move a load horizontally in the absence of friction.
Why don't you do any work when you carry an object art a constant velocity?
Well, if you do that for a while, you could certainly raise a sweat, and you would say that you've done a lot of work. But in the strict Physics definition of "work", none of it has been done to the object you carried. The strict definition is: Force acting through a distance. Referring to the object you carry: -- You don't move it vertically. You just hold it there against the force of gravity, but your vertical force doesn't move it up or down. So no work is done vertically. -- Horizontally, the speed is constant. No force is required to maintain a constant speed, so no work is done horizontally either.
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When we carry an object across a room without lifting it or setting it down we do no physical work on it?
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From the research done it looks like you can buy books about Boehm porcelain from any major book store. You can find them at Barns and Nobel. You could even find one at Amazon. Nook did not carry any books about Boehn porcelain.
Is work being done when you carry your book down the hall to class Explain?
Yes, your books have wight due to gravity and thus you are carrying this weight down the hall, the work is mgh = book-weightxh where h is the height you are carrying the books at.
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