The shown portion of a slide slope is contained in a vertical plane. sections ab and cd have the radii of curvature indicated in the figure, while that section bc is straight and forms an angle of 20 with the horizontal. if the coefficient of kinetic friction between the sled and the slope is 0.10 and the speed of the sled is 25 ft / s at b, determine the tangential component of the acceleration of the sled (a) just before get to b,
b.just after passing
c.
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no tengo la más mínima idea de que cosa dice ahí pero necesito puntos
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