## anonymous 4 years ago 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.

1. 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. $W = F_x \Delta x$

2. anonymous

is it we've to ignore the mass given?

3. anonymous

yes as they gave the force already

4. anonymous

ok thanx ^_^

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