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Playground Slide
The following is the question:
A child of mass 40 kg goes down an 8.0 m long slide at 30 degree inclination with the horizontal. the Coefficient of kinetic friction between the child and the slide is .35. If the child starts from rest at the top of the slide, how fast is he traveling when he reaches the bottom?
I am able to do this problem with conservation of energy without considering friction. However, how do I do the problem with it? Do I still use conservation of energy?
Customer support service by UserEcho
You need to express the effect of friction in terms of energy. The force of friction will be constant since the slide is straight. A constant force F applied over a single direction for a distance, d , does work on the object equal to F(dot)d. Now do the same conservatin of energy process, but with the work of friction added in.
Hope this helps!