Finding the mass of an object
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Finding the mass of an object

[From: ] [author: ] [Date: 11-07-05] [Hit: ]
Does it start at rest and end at whatever velocity it needs to for easiest convenience?Does it have an existing upward speed prior to starting the clock?......
A crane is using a force of 2500N to lift an onbject 30m high in 50seconds. What is the mass of the object?
Please tell me how to figure this out!

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Certainly not enough info, but if the lift is at a steady speed, the mass of the object = (2500/9.8) = 255.1kg.
But as you have a time frame, you could have an acceleration occuring, so please add all possible information!

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Not enough information. Please identify the details of this lifting. Does it start at rest and end at rest? Does it start at rest and end at whatever velocity it needs to for easiest convenience? Does it have an existing upward speed prior to starting the clock?
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