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A 30-kg toboggan made of birch wood is facing downhill on a well-packed snowy slope. At a location where the slope is 25.0° , the toboggan just begins to slide downhill. What is the coefficient of static friction for the birch toboggan on packed snow?
 

3 years ago

Answered By Mahboubeh D

mgsin $\theta$θ =FS

mgcos $\theta$θ =N

FS$\mu$μS.N

mgsin $\theta$θ$\mu$μ.mgcos $\theta$θ 

 $\mu$μS$\frac{sin\theta}{cos\theta}$sinθcosθ  = Tan (25)