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A 25-kg block moving at 1.0 m/s coasts down a 4-m high ramp inclined at 20 degree with the horizontal. The coefficient of kinetic friction between the block and the ramp is 0.20. After reaching the bottom, the block slides along a level frictionless floor and strikes a spring with spring constant k = 1000 N/m.
A). How far does it compress the spring?
B). The ramp ices over before the block returns, resulting in a frictionless surface. How far back up along the ramp does the block travel?
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A small block with mass 0.0475kg slides in a vertical circle of radius 0.0710m on the inside of a circular track. What is the magnitude of the normal force that the track exerts on the block when it is at the top of its path
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