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    walter325's Avatar
    walter325 Posts: 2, Reputation: 1
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    #1

    Nov 20, 2015, 11:36 AM
    A father pushes horizontally on his daughter's sled to move it up a snowy incline, as
    A father pushes horizontally on his daughter's sled to move it up a snowy incline, as illustrated in the figure, with h = [COLOR=red]3.5[/COLOR] m and θ = [COLOR=red]10[/COLOR][COLOR=red]°[/COLOR]. The total mass of the sled and the girl is 35 kg and the coefficient of kinetic friction between the sled runners and the snow is 0.20. If the sled moves up the hill with a constant velocity, how much work is done by the father in moving it from the bottom to the top of the hill?




    A block slides along a track from one level to a higher level, by moving through an intermediate valley. The track is frictionless until the block reaches the higher level. There a frictional force stops the block in a distance d. The block's initial speed v0 is [COLOR=red]6.18[/COLOR] m/s; the height difference h is [COLOR=red]1.40[/COLOR] m; and the coefficient of kinetic friction µ is 0.600. Find d.
    smoothy's Avatar
    smoothy Posts: 25,490, Reputation: 2853
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    #2

    Nov 20, 2015, 11:40 AM
    Since this is your homework assignment... how did you go about figuring it out and what answer did you get?
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