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You are designing a delivery ramp for crates containing exercise equipment. The crates weighing 1490 N will move at a speed of 1.80 m/s at the top of a ramp that slopes downward at an angle 21.0^\circ. The ramp exerts a kinetic friction force of 540 N on each crate, and the maximum static friction force also has this value. Each crate will compress a spring at the bottom of the ramp and will come to rest after traveling a total distance of 7.60 m along the ramp. Once stopped, a crate must not rebound back up the ramp.

Calculate the force constant of the spring that will be needed in order to meet the design criteria.

I am stuck on this only because I cannot extract from this data the distance the spring compresses. Can someone please offer some insight?

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# Calculate the force of a spring

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