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mahannan
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if a man is lifting weight while standing at rest, is he doing work microscopically?
If he's lifting it microscopically.mahannan said:if a man is lifting weight while standing at rest, is he doing work microscopically?
I mean, do his muscles perform any work as he is standing while lifting the weight at rest?Doc Al said:If he's lifting it microscopically.
Do you mean holding a weight without moving it? Or lifting a weight while standing in one place?
Doc Al said:We beat this one to death here: https://www.physicsforums.com/showthread.php?t=119026
Yes, way too slow to be useful. But the thread wasn't that old, so I found it in the list.Hootenanny said:Was your search function running slow? Mine took ages to display...
Work done holding a weight refers to the amount of energy expended to hold or lift a weight against the force of gravity. It is a measure of the effort required to overcome the weight of an object.
The amount of work done holding a weight is calculated by multiplying the weight of the object in kilograms by the distance it is lifted in meters, and then multiplying that by the force of gravity (9.8 m/s^2). This can be expressed using the formula W = mgh, where W is work, m is mass, g is gravity, and h is height.
The units for work done holding a weight are joules (J) in the SI system. In the imperial system, the unit is foot-pounds (ft-lb).
Yes, the weight of the object does affect the work done holding it. The greater the weight of the object, the more work is required to hold or lift it against the force of gravity. This is because work is directly proportional to the weight of an object.
No, these are two different concepts. Work done holding a weight refers to the effort required to keep an object at a certain height against gravity. Work done by lifting a weight refers to the effort required to move an object from one height to another against gravity. The latter involves a change in the potential energy of the object, while the former does not.