Calculating Power without distance?

  • Thread starter Ash Powers
  • Start date
  • #1

Homework Statement



Calculate the power of a motor that can lift 600 N in 1 Minute

Homework Equations




The Attempt at a Solution



I've been asked to help a friends daughter with this question because I work in a Lab, unfortunately I'm a biologist working in a chemistry lab so I'm struggling![/B]

I assumed that distance was required to work out power:

power (W) = N x Distance (m)

Time (s)

Am I missing something entirely?

Thanks in advance!
 

Answers and Replies

  • #2
BvU
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Homework Helper
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Hello AP, welcome to PF :smile: !

Yes, there is something missing: 600 N is a force. Work (energy) is force times distance. Power is work per time. So the calculation

Power = Force x distance / time
can't be made: the distance is missing.
 
  • #3
Thanks very much!

This problem is in a GCSE revision book, and that is the problem word for word. At least it has got me interested in physics again, thanks for the welcome.
 
  • #4
BvU
Science Advisor
Homework Helper
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Strange. You can imagine it takes a bit more power to lift 600 N over 100 m in one minute than over 1 meter ...
 

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