anonymous
  • anonymous
a box of mass 16kg is pulled from rest a distance of 5m across a smooth horizontal floor by a cable inclined at 60degree to the horizontal.find the work done by the tension in the cable given that its magnitude is 25N.
Physics
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anonymous
  • anonymous
a box of mass 16kg is pulled from rest a distance of 5m across a smooth horizontal floor by a cable inclined at 60degree to the horizontal.find the work done by the tension in the cable given that its magnitude is 25N.
Physics
schrodinger
  • schrodinger
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anonymous
  • anonymous
Only the portion of the force that is parallel to the floor does work. To find this, we use trig. \[F_x = T \cos(\theta)\] Work is expressed as force times distance. \[W = F_x \Delta x\]
anonymous
  • anonymous
is it we've to ignore the mass given?
anonymous
  • anonymous
yes as they gave the force already

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anonymous
  • anonymous
ok thanx ^_^

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