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A box of physics books slides down a ramp inclined at an angle of 40 degrees...

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Physics

A box of physics books slides down a ramp inclined at an angleof 40 degrees to the horizontal. The total length of the ramp is10m. The coefficient of kinetic friction between the box and theramp is .2 for the top 8m and zero for the bottom 2m. Upon reachingthe bottom of the ramp, a spring bounces the box back upward.

(a) Find the distance that the box travels back up the ramp onthe return bounce.

(b) Your answer shouldnt depend on the spring constant of thespring at the bottom. Why not?

Answer & Explanation Solved by verified expert
3.8 Ratings (643 Votes)
The description of the problem is not very clear but I willasume that the situation is as illustated on figure belowLet us Apply the work Energy Theoremfrom wherefrom wherefrom wherefrom wherefrom wherefrom wherefrom whereand this is the speed at which it reaches the frictionless 2meterroad on the rampNow    See Answer
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