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  3. 1. advanced skiers turn by sliding the backs of th

1. Advanced skiers turn by sliding the backs of their skis across the snow. Since the...

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Physics

1. Advanced skiers turn by sliding the backs of their skisacross the snow. Since the fronts of their skis don’t move much,the skis end up pointed in a new direction.

a. The amount of sideways force that a skier must exert on theskis to slide them sideways is proportional to how hard the skispress down on the snow beneath them. Why?

b. Less skilled skiers sometimes turn without unweighting—theypush their skis sideways so hard that the skis slide anyway. Thistechnique is exhausting. Why does it require so much work?

c. Why is wax used on skis? Why wouldn’t WD-40 work as well asthe wax? What is in WD-40?

Answer & Explanation Solved by verified expert
3.9 Ratings (643 Votes)
a There is friction that is produced when skies slide across the snow This sliding friction is proportional to the forces pressing the two surfaces together This force increases as the force pushing the two surfaces together    See Answer
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